Muhammad (c. 570 – 8 June 632 CE) was an Arab religious and political leader and the founder of Islam. According to Islam, he was a prophet who was divinely inspired to preach and confirm the monotheistic teachings of Adam, Noah, Abraham, Moses, Jesus, and other prophets. He is believed to be the Seal of the Prophets in Islam, and along with the Quran, his teachings and normative examples form the basis for Islamic religious belief.

Muhammad was born c. 570 CE in Mecca. He was the son of Abdullah ibn Abd al-Muttalib and Amina bint Wahb. His father, Abdullah, the son of Quraysh tribal leader Abd al-Muttalib ibn Hashim, died around the time Muhammad was born. His mother Amina died when he was six, leaving Muhammad an orphan. He was raised under the care of his grandfather, Abd al-Muttalib, and paternal uncle, Abu Talib. In later years, he would periodically seclude himself in a mountain cave named Hira for several nights of prayer. When he was 40, c. 610, Muhammad reported being visited by Gabriel in the cave and receiving his first revelation from God. In 613, Muhammad started preaching these revelations publicly, proclaiming that 'God is One', that complete 'submission' (Islām) to God (Allāh) is the right way of life (dīn), and that he was a prophet and messenger of God, similar to the other prophets in Islam. (Full article...)

Husayn ibn Ali (Arabic: الحسين بن علي, romanized: al-Ḥusayn ibn ʿAlī; 11 January 626 – 10 October 680) was a social, political and religious leader. The grandson of the Islamic prophet Muhammad and a son of Ali ibn Abi Talib and Muhammad's daughter Fatima, as well as a younger brother of Hasan ibn Ali, Husayn is regarded as the third Imam (leader) in Shia Islam after his brother, Hasan, and before his son, Ali al-Sajjad. Being the grandson of the prophet, he is also a prominent member of the Ahl al-Bayt. He is also considered to be a member of the Ahl al-Kisa, and a participant in the event of the mubahala. Muhammad described him and his brother, Hasan, as the leaders of the youth of Paradise.

During the caliphate of Ali, Husayn accompanied him in wars. After the assassination of Ali, he obeyed his brother in recognizing the Hasan–Mu'awiya treaty, despite it being suggested to do otherwise. In the nine-year period between Hasan's abdication in AH 41 (660 CE) and his death in AH 49 or 50 (669 or 670 CE), Hasan and Husayn retreated to Medina, trying to keep aloof from political involvement for or against Mu'awiya. After the death of Hasan, when Iraqis turned to Husayn, concerning an uprising, Husayn instructed them to wait as long as Mu'awiya was alive due to Hasan's peace treaty with him. Prior to his death, Mu'awiya appointed his son Yazid as his successor, contrary to the Hasan–Mu'awiya treaty. When Mu'awiya died in 680, Yazid demanded that Husayn pledge allegiance to him. Husayn refused to do so. As a consequence, he left Medina, his hometown, to take refuge in Mecca in AH 60 (679 CE). There, the people of Kufa sent letters to him, invited him to Kufa and asked him to be their Imam and pledged their allegiance to him. On Husayn's way to Kufa with a retinue of about 72 men, his caravan was intercepted by a 1,000-strong army of the caliph at some distance from Kufa. He was forced to head north and encamp in the plain of Karbala on 2 October, where a larger Umayyad army of some 4,000 or 30,000 arrived soon afterwards. Negotiations failed after the Umayyad governor Ubayd Allah ibn Ziyad refused Husayn safe passage without submitting to his authority, a condition declined by Husayn. Battle ensued on 10 October during which Husayn was martyred along with most of his relatives and companions, while his surviving family members were taken prisoner. The battle was followed by the Second Fitna, during which the Iraqis organized two separate campaigns to avenge the martyrdom of Husayn; the first one by the Tawwabin and the other one by Mukhtar al-Thaqafi and his supporters. (Full article...)

Fatima bint Muhammad (Arabic: فَاطِمَة بِنْت مُحَمَّد, romanized: Fāṭima bint Muḥammad; 605/15–632 CE), commonly known as Fatima al-Zahra' (Arabic: فَاطِمَة ٱلزَّهْرَاء, romanized: Fāṭima al-Zahrāʾ), was the daughter of the Islamic prophet Muhammad and his wife Khadija. Fatima's husband was Ali, the fourth of the Rashidun caliphs and the first Shia imam. Fatima's sons were Hasan and Husayn, the second and third Shia imams, respectively. Fatima has been compared to Mary, mother of Jesus, especially in Shia Islam. Muhammad is said to have regarded her as the best of women and the dearest person to him. She is often viewed as an ultimate archetype for Muslim women and an example of compassion, generosity, and enduring suffering. It is through Fatima that Muhammad's family line has survived to this date. Her name and her epithets remain popular choices for Muslim girls.

When Muhammad died in 632, Fatima and her husband Ali refused to acknowledge the authority of the first caliph, Abu Bakr. The couple and their supporters held that Ali was the rightful successor of Muhammad, possibly referring to his announcement at the Ghadir Khumm. Controversy surrounds Fatima's death within six months of Muhammad's. Sunni Islam holds that Fatima died from grief. In Shia Islam, however, Fatima's (miscarriage and) death are said to have been the direct result of her injuries during a raid on her house to subdue Ali, ordered by Abu Bakr. It is believed that Fatima's dying wish was that the caliph should not attend her funeral. She was buried secretly at night and her exact burial place remains uncertain. (Full article...)

Hasan ibn Ali (Arabic: الْحَسَنِ بْن عَلِيّ, romanized: al-Ḥasan ibn ʿAlī; c. 625 – 2 April 670) was an Alid political and religious leader. The eldest son of Ali and Fatima and a grandson of the Islamic prophet Muhammad, Hasan briefly ruled as Rashidun caliph from January 661 until August 661. He is considered as the second Imam in Shia Islam, succeeding Ali and preceding his brother Husayn. As a grandson of the prophet, he is part of the ahl al-bayt and the ahl al-kisa, and also participated in the event of the mubahala.

During the caliphate of Ali (r. 656–661), Hasan accompanied him in the military campaigns of the First Fitna. Following Ali's assassination in January 661, Hasan was acknowledged caliph in Kufa. His sovereignty was not recognized by Mu'awiya I (r. 661–680), the governor of Syria, who led an army into Kufa while pressing Hasan for abdication in letters. In response, Hasan sent a vanguard under Ubayd Allah ibn al-Abbas to block Mu'awiya's advance until he arrived with the main army. Meanwhile, Hasan was severely wounded in an abortive assassination attempt by the Kharijites, a faction opposed to both Ali and Mu'awiya. This attack demoralized Hasan's army and led to widespread desertion. Ubayd Allah and most of his troops also defected after Mu'awiya bribed him. In August 661, Hasan signed a peace treaty with Mu'awiya on the condition that the latter should rule in compliance with the Quran and the sunna, a council should appoint his successor, and Hasan's supporters would receive amnesty. Hasan retired from politics and abdicated in Medina where he died either from illness or poisoning, though the early sources are nearly unanimous that he was poisoned. Mu'awiya is commonly viewed as the instigator in the murder of Hasan, which removed an obstacle to the succession of his son Yazid I (r. 680–683). (Full article...)

Ali ibn Abi Talib (Arabic: عَلِيُّ بْن أَبِي طَالِب, romanized: ʿAlī ibn Abī Ṭālib; c. 600–661 CE) was the cousin and son-in-law of the Islamic prophet Muhammad, and was the fourth Rashidun caliph who ruled from 656 CE to 661, as well as the first Shia imam. Born to Abu Talib ibn Abd al-Muttalib and Fatima bint Asad, young Ali was raised by his elder cousin Muhammad and was among the first to accept his teachings.

Ali played a pivotal role in the early years of Islam when Muslims were severely persecuted in Mecca. After immigration (hijra) to Medina in 622, Muhammad gave his daughter Fatima to Ali in marriage and swore a pact of brotherhood with him. Ali served as Muhammad's secretary and deputy in this period, and was the flag bearer of his army. Numerous sayings of Muhammad praise Ali, the most controversial of which was uttered in 632 at the Ghadir Khumm, "Whoever I am his mawla, this Ali is his mawla." The interpretation of the polysemous Arabic word mawla is disputed: For Shia Muslims, Muhammad thus invested Ali with his religious and political authority, while Sunni Muslims view this as a mere statement of friendship and rapport. When Muhammad died in the same year, a group of Muslims met in the absence of Ali and appointed Abu Bakr (r. 632–634) as their leader. Ali later relinquished his claims to leadership and resigned from public life during the reigns of Abu Bakr and his successor, Umar (r. 634–644). Even though his advice was occasionally sought, the conflicts between Ali and the first two caliphs are epitomized by his refusal to follow their practices. This refusal cost Ali the caliphate to the benefit of Uthman (r. 644–656), who was thus appointed to succeed Umar by the electoral council. Ali was also highly critical of Uthman, who was widely accused of nepotism and corruption. Yet Ali also repeatedly mediated between the caliph and the provincial dissidents angered by his policies. (Full article...)

The Twelve Imams (Arabic: ٱلْأَئِمَّة ٱلْٱثْنَا عَشَر, al-ʾAʾimmah al-ʾIthnā ʿAšar; Persian: دوازده امام, Davâzdah Emâm) are the spiritual and political successors to the Islamic prophet Muhammad in the Twelver branch of Shia Islam, including that of the Alawite and Alevi.

According to Twelver theology, the Twelve Imams are exemplary human individuals who not only rule over the community with justice, but also are able to keep and interpret sharia and the esoteric meaning of the Quran. The words and deeds of Muhammad and the imams are a guide and model for the community to follow; as a result, they must be free from error and sin (known as ismah, or infallibility) and must be chosen by divine decree through Muhammad. (Full article...)

Hezbollah (/ˌhɛzbəˈlɑː/ HEZ-bə-LAH; Arabic: حزب الله, romanized: Ḥizbu 'llāh, pronounced [ħizbuˈɫːaːh], lit. 'Party of God') is a Lebanese Shia Islamist political party and paramilitary group. Hezbollah's paramilitary wing is the Jihad Council, and its political wing is the Loyalty to the Resistance Bloc party in the Lebanese Parliament. Its armed strength was assessed to be equivalent to that of a medium-sized army in 2016.

Hezbollah was founded in 1982 by Lebanese clerics in response to the Israeli invasion of Lebanon. Inspired by the Iranian Revolution of 1979 and Ayatollah Ruhollah Khomeini's model of Islamic governance, Hezbollah established strong ties with Iran. The group was initially supported by 1,500 Islamic Revolutionary Guard Corps (IRGC) instructors, who helped unify various Lebanese Shia factions under Hezbollah's leadership. Hezbollah's 1985 manifesto outlined its key objectives, which include expelling Western influence from the region, destroying Israel, pledging allegiance to Iran's supreme leader, and establishing an Islamic government influenced by Iran's political ideology. However, the manifesto also emphasized Lebanese self-determination. Throughout the 1980s and 1990s, Hezbollah fought against Israeli forces and the South Lebanon Army (SLA), eventually leading to Israel's withdrawal from southern Lebanon in 2000. Hezbollah also played a prominent role in the 2006 Lebanon War and later became involved in the Syrian civil war, where it fought alongside the Syrian government against rebel forces. (Full article...)

Al-Risalah al-Dhahabiah (Arabic: ٱلرِّسَالَة ٱلذَّهَبِيَّة, Arabic pronunciation: ['rɪsælætæ 'ðæhæ'biæ]; "The Golden Treatise") is a medical dissertation on health and remedies attributed to Ali ibn Musa al-Ridha (765–818), the eighth Imam of Shia Islam. He wrote this dissertation in accordance with the demand of Ma'mun, the caliph of the time. It is revered as the most precious Islamic literature in the science of medicine, and was entitled "the golden treatise" as Ma'mun had ordered it written in gold ink. The chain of narrators is said to reach Muhammad ibn Jumhoor or al-Hassan ibn Muhammad al-Nawfali who is described as "highly esteemed and trustworthy" by al-Najjashi.

The treatise of Ali al-Ridha includes scientific branches such as Anatomy, Physiology, Chemistry and Pathology when medical science was still primitive. According to the treatise, one's health is determined by four humors of blood, yellow bile, black bile and phlegm, the suitable proportion of which maintains the health. The liver plays an important role in producing and maintaining the required proportions in the body. Ali al-Ridha describes the body as a kingdom whose king is the heart while the (blood) vessels, the limbs, and the brain are the laborers. The issue of the authorship and the transmission of the text has been critically analysed in the studies by Speziale (2004) and Speziale - Giurini (2009). (Full article...)

Sahifah of al-Ridha (Arabic: صَّحِيفَة ٱلرِّضَا, Ṣaḥīfah ar-Riḍā, lit. "Pages of al-Ridha"), also known as Sahifat of al-Reza and Sahifat al-Imam al-Ridha ("Book of Imam al-Ridha"), is a collection of 240 hadiths attributed to Ali ibn Musa al-Ridha, the eighth Shia Imam.

The Sahifah is one of the major sources of Shia belief and has attracted the attention of Shia scholars such as Ibn Babawayh and Sheikh Tabarsi. It contains hadiths on various topics including the invocation of Allah; the importance of praying five times a day and of saying the prayer for the dead; the excellence of the household of Muhammad, of the believer, of good manners, of the names Muhammad and Ahmad, of various foods, fruits, and ointments, of obeying parents, of strengthening the bonds of kinship, and of jihad; a warning against cheating, backbiting, or tattling; and other miscellaneous traditions. The section on Muhammad's household discusses each of its fourteen members separately. (Full article...)

Ali ibn Abi Talib, the fourth Rashidun caliph (r. 656–661) and the first Shia Imam, was assassinated during the morning prayer on 28 January 661 CE, equivalent to 19 Ramadan 40 AH. He died of his wounds about two days after the Kharijite dissident Ibn Muljim struck him over his head with a poison-coated sword at the Great Mosque of Kufa, located in Kufa, in present-day Iraq. He was about sixty-two years of age at the time of his death.

Ibn Muljim had entered Kufa with the intention of killing Ali, probably in revenge for the Kharijites' defeat in the Battle of Nahrawan in 658. He found two accomplices in Kufa, namely, Shabib ibn Bujra and Wardan ibn al-Mujalid. Unlike Ibn Muljim, the swords of these two missed Ali and they fled, but were later caught and killed. Before his death, Ali requested either a meticulous application of lex talionis to Ibn Muljim or his pardon, and he was later executed by Hasan, the eldest son of Ali. By most accounts, also involved in the assassination was al-Ash'ath ibn Qays, the influential Kufan tribal leader whose loyalty to Ali is often questioned in the early sources. The assassination of Ali paved the way for his rival Mu'awiya to found the Umayyad Caliphate. The shrine of Ali in Najaf, near Kufa, is a major destination for Shia pilgrims. (Full article...)

The Fourteen Infallibles (Arabic: ٱلْمَعْصُومُون ٱلْأَرْبَعَة عَشَر, al-Maʿṣūmūn al-ʾArbaʿah ʿAšar; Persian: چهارده معصومین, Čahârdah Ma'sūmīn) in Twelver Shia Islam are the Islamic prophet Muhammad, his daughter Fatima, and the Twelve Imams. All are considered to be infallible under the theological concept of Ismah. Accordingly, they have the power to commit sin but by their nature are able to avoid doing so, which is regarded as a miraculous gift from God. The Infallibles are believed to follow only God's desire in their actions because of their supreme righteousness, consciousness, and love for God. They are also regarded as being immune to error in practical matters, in calling people to religion, and in the perception of divine knowledge. Some Twelver Shia believe the Fourteen Infallibles are superior to the rest of creation and to the other major prophets. (Full article...)

Abu 'Abd Allah Muhammad ibn Muhammad ibn al-Nu'man al-'Ukbari al-Baghdadi, known as al-Shaykh al-Mufid (Arabic: الشیخ المفید) and Ibn al-Mu'allim (c. 948–1022 CE), was a prominent Iraqi Twelver Shia theologian. His father was a teacher (mu'allim), hence the name Ibn al-Mu'allim. The title "al-Mufid" was given to him either by Muhammad al-Mahdi, the twelfth Shia Imam, or by al-Rummani, a Sunni scholar, after a conversation with him. The leader of the Shia community, he was a mutakallim, theologian, and Shia jurist.

He was taught by Al-Shaykh al-Saduq, Ibn Qulawayh, Abu Abdallah al-Basri and al-Rummani, and Sharif al-Murtaza and Shaykh Tusi were among his students. Only 10 of his 200 works have survived, among which are Amali, Al-Irshad, Al-Muqni'ah, and Tashih al-Itiqadat. (Full article...)

Musa Sadr al-Din al-Sadr (Arabic: موسى صدر الدین الصدر; Persian: موسی صدرالدین صدر‎‎; 4 June 1928 – disappeared 31 August 1978) was a Lebanese-Iranian Shia Muslim cleric, politician and revolutionary In Lebanon. He founded and revived many Lebanese Shia organizations, including schools, charities, and the Amal Movement.

Born in the Chaharmardan neighborhood in Qom, Iran, he underwent both seminary and secular studies in Iran. He belongs to the Al-Sadr family from Jabal Amel in Lebanon, a branch of the Musawi family which traces its roots to Musa Ibn Jaafar, the seventh Shia Imam, and ultimately to the Islamic prophet Muhammad through his daughter Fatima. Therefore, Musa al-Sadr is often styled with the honorific title Sayyid. He left Qom for Najaf to study theology and returned to Iran after the 1958 Iraqi coup d'état. (Full article...)

Ayatullah Sheikh Muhammad Kazim Khurasani (Persian: محمدکاظم خراسانی; 1839 – 12 December 1911), commonly known as Akhund Khurasani (Persian: آخوند خراسانی) was a Shia jurist and political activist.

He is known for using his position as a Marja as legitimizing force behind the first democratic revolution of Asia that happened in Iran (1905–1911), where he was the main clerical supporter of the revolution. He believed that the democratic form of government would be the best possible choice in the absence of Imam and regarded the democratic constitutional revolution a Jihad (holy war) in which all Muslims had to participate. (Full article...)

ʿAlī Ḥusaynī Sīstānī (Persian: علی حسینی سیستانی; Arabic: علي الحسيني السيستاني; born 4 August 1930) is an Iranian-born Islamic scholar and the dean of the Hawza of Najaf in Iraq. A Grand Ayatollah and marja, Sistani is considered one of the leading religious leaders of Twelver Shia Muslims. Sistani has been a vocal critic of foreign interference in Iraqi affairs and has warned foreign actors against imposing their will on the Iraqi people.

Born in Mashhad, Iran (with the father as Dulan) to a Sayyid family, Sistani studied in Qom under Hossein Borujerdi and later in Najaf under Abu al-Qasim Khu'i. An Usuli, Sistani rose to the rank of mujtahid in 1960 and succeeded Abd al-A'la Sabziwari as Grand Ayatollah. Sistani was included in top positions of The Muslim 500: The World's Most Influential Muslims from 2004 to 2024 and named one of the 100 most influential people in the world by Time magazine in 2004 and 2005. (Full article...)

Ayatollah Sheikh Nimr Baqir al-Nimr (21 June 1959 – 2 January 2016), commonly referred to as Sheikh Nimr, was a Saudi Shia sheikh from Al-Awamiyah in Saudi Arabia's Eastern Province. His arrest and execution were widely condemned by various governments and human rights organizations.

He was popular among youth and critical of the Saudi Arabian government, advocating for free elections in Saudi Arabia. In 2006, al-Nimr was arrested by Saudi authorities, during which he claimed to have been beaten by the Mabahith, a Saudi secret police agency. In 2009, he criticized Saudi authorities and suggested that if the rights of Saudi Shia were not respected, the Eastern Province should secede. In response, Saudi authorities arrested al-Nimr along with 35 others. During the 2011–12 Saudi Arabian protests, al-Nimr urged protestors to resist police bullets with "the roar of the word" rather than violence. The Guardian described al-Nimr as having "taken the lead in [the] uprising." (Full article...)

Grand Ayatollah Muhammad Husayn Fadlallah (Arabic: محمد حسين فضل الله, romanized: Muḥammad Ḥusayn Fadl Allāh; 16 November 1935 – 4 July 2010) was a prominent Lebanese-Iraqi Twelver Shia cleric. Born in Najaf, Iraq, Fadlallah studied Islam in Najaf before moving to Lebanon in 1952. In the following decades, he gave many lectures, engaged in intense scholarship, wrote dozens of books, founded several Islamic religious schools, and established the Mabarrat Association. Through the aforementioned association, he established a public library, a women's cultural center, and a medical clinic.

Fadlallah was sometimes called the "spiritual mentor" of Hezbollah in the media, although this was disputed by other sources. He was also the target of several assassination attempts, including the 1985 Beirut car bombing. (Full article...)

Ali Hosseini Khamenei (Persian: علی حسینی خامنه‌ای; born 19 April 1939) is an Iranian cleric, politician, and dictator who has served as the second supreme leader of Iran since 1989. He previously served as the third president of Iran from 1981 to 1989. Khamenei's 35-year-long rule has made him the longest-serving head of state in the Middle East, as well as the second-longest-serving Iranian leader of the last century after Shah Mohammad Reza Pahlavi. Khamenei is a Grand Ayatollah and marja, and is considered the leader of Shia Muslims and the Axis of Resistance.

According to his official website, Khamenei was arrested six times before being exiled for three years during the reign of Mohammad Reza Pahlavi. In June 1981, after the Iranian revolution and the overthrow of the shah, he was the target of an attempted assassination that paralyzed his right arm. Khamenei was one of Iran's leaders during the Iran–Iraq War in the 1980s, and developed close ties with the Iranian Revolutionary Guards, which he controls, and whose commanders are elected and dismissed by him. The Revolutionary Guards have been deployed to suppress opposition to the Islamic Republic of Iran. Khamenei served as the third president of Iran from 1981 to 1989, while becoming a close ally of the first supreme leader, Ruhollah Khomeini. Shortly before his death, Khomeini had a disagreement with his deputy—Hussein Ali Montazeri—and there was quandary for choosing a successor when Khomeini died. The Assembly of Experts elected Khamenei as the next supreme leader on 4 June 1989, at age 50. According to Akbar Hashemi Rafsanjani, Khamenei was the man Khomeini had endorsed as his successor. Khamenei has been head of the servants of Astan Quds Razavi since 14 April 1979. (Full article...)