From Wikipedia, the free encyclopedia.
Tahir ibn Husayn (d. 822) was a Persian general and governor during the Abbasid caliphate. Specifically, he served under al-Ma'mun and led the armies that would defeat al-Amin, making al-Ma'mun the caliph.
Afterwards, Tahir was made governor of the eastern Abbasid lands, effectively making him governor of Persia. Tahir would declare independence from the Abbasid empire in 822 by omitting any mention of al-Ma'mun during a Friday sermon. However, he would die the same night, and al-Ma'mun would appoint Tahir's son to continue at his fathers post. This established the Tahirid line, which would form a semi-autonomous state in Persia.
