Tahirid Dynasty طاهریان Tâheriyân
821–873
Provinces governed by the Tahirids
Status	De jure governorate of the Abbasid Caliphate[1]
Capital	Merv, later Nishapur
Common languages	Early New Persian (court, informal)[2][3] Arabic (literature/poetry/science)[4]
Religion	Sunni Islam
Government	Caliphal governoral emirate
Emir
• 821	Tahir ibn Husayn
Historical era	Medieval
• Established	821
• Disestablished	873
Area
800 est.[5]	1,000,000 km2 (390,000 sq mi)
Preceded by Succeeded by Abbasid Caliphate Saffarid Empire Alid dynasties of northern Iran

The Tahirid dynasty (Persian: طاهریان, romanized: Tâheriyân, pronounced [t̪ɒːheɾiˈjɒːn]) was an Arabized Sunni Muslim dynasty of Persian dehqan origin that ruled as governors of Khorasan from 821 to 873 as well as serving as military and security commanders in Abbasid Baghdad until 891. The dynasty was founded by Tahir ibn Husayn, a leading general in the service of the Abbasid caliph al-Ma'mun. For his support of al-Ma'mun in the Fourth Fitna, he was granted the governance of Khorasan.

The Tahirids, however, were not an independent dynasty—according to Hugh Kennedy: "The Tahirids are sometimes considered as the first independent Iranian dynasty, but such a view is misleading. The arrangement was effectively a partnership between the Abbasids and the Tahirids." Indeed, the Tahirids were loyal to the Abbasid caliphs and in return enjoyed considerable autonomy; they were in effect viceroys representing Abbasid rule in Persia.^[6][7] The tax revenue from Khorasan sent to the caliphal treasury in Baghdad was perhaps larger than those collected previously.^[6]

The founder of the Tahirid dynasty was Tahir ibn Husayn, a Sunni Persian of dehqan origin,^[8][9] who had played a major military role in the civil war between the rival caliphs al-Amin and al-Ma'mun.^[10] He and his ancestors had previously been awarded minor governorships in eastern Khorasan for their service to the Abbasids.^[8] In 821, Tahir was made governor of Khorasan, but he died soon afterwards.^[a][11] The caliph then appointed Tahir's son, Talha, governor of Khorasan.^[12] Talha was unsuccessful in removing the Kharijites from Sistan,^[13] and following the death of the Kharijite leader, Hamza b. Adarak (d.828),^[14] the Tahirids occupied Zarang but never succeeded in collecting taxes in the surrounding countryside.^[15]

Tahir's other son, Abdullah, was instated as the wali of Egypt and the Arabian Peninsula, and when Talha died in 828 he was given the governorship of Khorasan. Abdullah is considered one of the greatest of the Tahirid rulers,^[12] as his reign witnessed a flourishing of agriculture in his native land of Khorasan, popularity in the eastern lands of the Abbasid caliphate and expanding influence due to his experience with the western parts of the caliphate. A noted poet, he sympathized with all things Arabic.^[16]

The replacement of the Pahlavi script with the Arabic script in order to write the Persian language was done by the Tahirids in 9th century Khurasan.^[17]

Abdullah died in 844 and was succeeded by his son Tahir II.^[18] Not much is known of Tahir's rule, but the administrative dependency of Sistan was lost to rebels during his governorship. Tahirid rule began to seriously deteriorate after Tahir's son Muhammad ibn Tahir became governor, due to his carelessness with the affairs of the state and lack of experience with politics. Oppressive policies in Tabaristan, another dependency of Khorasan, resulted in the people of that province revolting and declaring their allegiance to the independent Zaydi ruler Hasan ibn Zayd in 864.^[12] In Khorasan itself, Muhammad's rule continued to grow increasingly weak, and in 873 he was finally overthrown by the Saffarid dynasty, who annexed Khorasan to their own empire in eastern Persia.

Besides their hold over Khorasan, the Tahirids also served as the military governors (ashab al-shurta) of Baghdad, beginning with Tahir's appointment to that position in 820. After he left for Khorasan, the governorship of Baghdad was given to a member of a collateral branch of the family, Ishaq ibn Ibrahim, who controlled the city for over twenty-five years.^[19] During Ishaq's term as governor, he was responsible for implementing the Mihna (inquisition) in Baghdad.^[20] His administration also witnessed the departure of the caliphs from Baghdad, as they made the recently constructed city of Samarra their new capital.^[21] When Ishaq died in 849 he was succeeded first by two of his sons, and then in 851 by Tahir's grandson Muhammad ibn Abdallah.^[19]

Abdallah played a major role in the events of the "Anarchy at Samarra" in the 860s, giving refuge to the caliph al-Musta'in and commanding the defense of Baghdad when it was besieged by the forces of the rival caliph al-Mu'tazz in 865. The following year, he forced al-Musta'in to abdicate and recognized al-Mu'tazz as caliph, and in exchange was allowed to retain his control over Baghdad.^[22] Violent riots plagued Baghdad during the last years of Abdallah's life, and conditions in the city remained tumultuous after he died and was succeeded by his brothers, first Ubaydallah and then Sulayman.^[23] Eventually order was restored in Baghdad, and the Tahirids continued to serve as governors of the city for another two decades. In 891, however, Badr al-Mu'tadidi was put in charge of the security of Baghdad in place of the Tahirids,^[19] and the family soon lost their prominence within the caliphate after that.^[12]

Early 9th century Sasanian-style silver plates from Merv.

The historian Clifford Edmund Bosworth explains that while the Tahirids were Persians, they were also highly Arabized in culture,^[24] and eager to be accepted in the caliphal world, where cultivation of things Arabic gave social and cultural prestige.^[25] Due to this, the Tahirids were not part of the renaissance of Early New Persian language and culture.^[25] He adds that the Persian language was at least tolerated in the entourage of the Tahirids, whereas the Saffarids played a leading part in the renaissance of Persian literature.^[25]

Centuries later, both 'Aufi and Daulatshah wrote the Tahirids were hostile to Persian literature.^[26] 'Abd-Allah b. Tahir ordered the Persian novel Vamiq-u Adhra "The Ardent Lover and the Virgin" (based on a Hellenistic novel^[27]) and other Persian and Zoroastrian works destroyed, according to Daulatshah.^[26]

However, according to the historian Shivan Mahendrarajah, in reference to the dynasties of the Iranian Intermezzo of which the Tahirids are considered part:^[28]

Persian (the language) and Iranian (the identity) were reasserting themselves. Iranians were adapting Arab-Islamic cultural tenets through a process of 'take the best, leave the rest'.

Within this context, Mahendrarajah adds that the Tahirids were specifically responsible for initiating the process by which Persian became written in the Perso-Arabic script, referring to this as "an ingenious Iranian adaption that allowed them to retain the heritage and charm of the Persian language".^[28]

The Tahirids claimed descent from Rustam, the mythological Iranian hero.^[29]

The art historian Sheila Blair explains that the Tahirids may well have added Persian inscriptions to their (now non-extant) buildings.^[30]

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History of Greater Iran
Pre-Islamic BCE / BC Prehistory Kura–Araxes culture c. 3400 – c. 2000 Helmand culture/Jiroft culture 3300-2200 Proto-Elamite civilization 3200–2800 Elamite dynasties 2800–550 Lullubi/Zamua 3100-675 Marhaši 2550-2020 Bactria–Margiana Complex 2400–1700 Gutian Dynasty 2141-2050 Avestan period c. 1500 BCE – 500 BCE Kingdom of Mannai 10th–7th century Neo-Assyrian Empire 911–609 Urartu 860–590 Median Empire 728–550 Scythian Kingdom 652–625 Achaemenid Empire 550–330 Ancient kingdom of Armenia 331 BCE – 428 CE Seleucid Empire 330–150 Caucasian Iberia c. 302 BCE – 580 CE Greco-Bactrian Kingdom 250–125 Parthian Empire 248 BCE–224 CE Caucasian Albania 2nd century BCE – 8th century CE Roman Empire 27 BCE – 330 CE CE / AD Kushan Empire 30–275 Sasanian Empire 224–651 Afrighid dynasty 305–995 Hephthalite Empire 425–557 Kabul Shahi kingdom 565–879 Dabuyid dynasty 642–760 Bagratid Armenia 880s – 1045 Alania 8th/9th century – 1238 / 9 Kingdom of Georgia 1008–1490
Islamic Rashidun Caliphate 637–651 Umayyad Caliphate 661–750 Abbasid Caliphate 750–1258 Shirvanshah 799–1607 Tahirid dynasty 821–873 Dulafid dynasty 840–897 Zaydis of Tabaristan 864–928 Saffarid dynasty 861–1003 Samanid Empire 819–999 Sajid dynasty 889/90–929 Ziyarid dynasty 928–1043 Buyid dynasty 934–1055 Sallarid dynasty 941–1062 Ghaznavid Empire 975–1187 Ghurid dynasty pre-879 – 1215 Seljuk Empire 1037–1194 Khwarazmian dynasty 1077–1231 Sultanate of Rum 1077–1307 Salghurids 1148–1282 Ilkhanate 1256–1353 Kart dynasty 1231–1389 Ottoman Empire 1299–1923 Muzaffarid dynasty 1314–1393 Chupanid dynasty 1337–1357 Jalairid Sultanate 1339–1432 Timurid Empire 1370–1507 Qara Qoyunlu Turcomans 1407–1468 Aq Qoyunlu Turcomans 1378–1508 Safavid Empire 1501–1722 Mughal Empire 1526–1857 Hotak dynasty 1722–1729 Afsharid Iran 1736–1750 Zand dynasty 1750–1794 Durrani Empire 1794–1826 Qajar Iran 1794–1925

Bold denotes a Tahirid that served as governor of Khorasan; italics denotes an individual who served as governor of Baghdad.^[32]

• Iranian Intermezzo
• List of Muslims
• List of Sunni Muslim dynasties

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