عبيد الله بن المهدي

عبيد الله بن المهدي

Ubaydallah ibn al-Mahdi al-Abbasi; al-Rashid's grantee of the Ahwaz musarra'a lands — a doubt arose, men raised it to al-Ma'mun, who ordered them reviewed: what held no doubt was executed, what was doubtful was named 'the doubted' — a practice still known in al-Ahwaz.