Al-Hasan ibn Sahl (701–851)
Born 701 CE, died 851 CE.
Al-Hasan ibn Sahl (Arabic: الحسن بن سهل; died 850/51) was an Abbasid official and governor of Iraq for Caliph al-Ma'mun (reigned 813–833) during the Fourth Fitna. Hasan's father was an Iranian Zoroastrian convert to Islam. Along with his brother, the future vizier al-Fadl ibn Sahl, Hasan entered the service of the Barmakid al-Fadl ibn Yahya in the reign of Harun al-Rashid (r. 786–809). During the civil war of the Fourth Fitna against Ma'mun's half-brother al-Amin (r. 808–813), he was entrusted with the supervision of the land tax (kharaj) office. After Ma'mun's troops captured the caliphal capital, Baghdad, Hasan was sent west to assume the governance of Iraq, while Ma'mun and Fadl remained in Marv. In early 815, the Zaydi Alid revolt of Ibn Tabataba and Abu'l-Saraya broke out at Kufa and spread quickly through southern Iraq. Hasan proved unable to confront it, and the rebels at one point threatened Baghdad itself before the intervention of the capable general Harthama ibn A'yan led to the suppression of the revolt.
Text from the Wikipedia article Al-Hasan_ibn_Sahl, licensed CC BY-SA 4.0.