خلع أهل بغداد إبراهيم بن المهدي

In 203 AH the people of Baghdad deposed Ibrahim ibn al-Mahdi and gave the oath of allegiance to al-Ma'mun as caliph, after an agreement with Humayd ibn Abd al-Hamid. Then Ibrahim disappeared. ^{1 2}

Al-Suyuti says he was given the title "the Blessed". In Dhu al-Hijja of 203 AH news reached him that people were slipping away from his allegiance, and he disappeared. His reign lasted two years less a few days, and he remained in hiding for eight years. ³