The Battle of Bayrudh was fought between the Sasanians and the Rashidun Caliphate in 643/4. Before the battle took place, a group of Sasanian supporters rallied among a certain Piruz, who rebelled against the Rashiduns. They were, however, defeated at Bayrudh in 643/4.

• Daryaee, Touraj (2012). The Oxford Handbook of Iranian History. Oxford University Press. pp. 1–432. ISBN 978-0199875757. Archived from the original on 2019-01-01. Retrieved 2015-01-04.