During that same year:
• Ishaq ibn Musa ibn Isa ibn Musa ibn Muhammad ibn Ali ibn Abd Allah ibn Abbas led the pilgrims in the Hajj.
Among the notable figures who passed away were:
1 Abu Usamah Hammad ibn Usamah (1);
2 Hammad ibn Masʿadah (2);
3 Harami ibn ʿUmārah (3);
4 ʿAli ibn ʿĀṣim (4); and
5 Muhammad ibn Muhammad, the associate of Abu al-Saraya to whom the people of Kufah had sworn allegiance after Ibn Ṭabāṭabā (5).
Then came the year 202 AH:
On its very first day the people of Baghdad pledged allegiance to Ibrahim ibn al-Mahdi as caliph and deposed al-Maʾmun. On Friday, the fifth of Muharram, Ibrahim mounted the pulpit; the populace swore fealty to him and bestowed upon him the honorific al-Mubarak. He soon gained control of Kufah and the Sawad countryside. When the troops demanded their stipends he stalled, then gave each soldier two hundred dirhams and issued them grants charged to the lands of the Sawad. As they marched out, they pillaged whatever they encountered, seizing the produce of both peasantry and state.
Ibrahim appointed al-ʿAbbas ibn Musa al-Hadi over the eastern sector and Ishaq ibn Musa al-Hadi over the western sector (6).
In the same year (7) a Kharijite insurgent named Mahdi ibn ʿUlwan rose up. Ibrahim dispatched an army against him under the command of Abu Ishaq al-Muʿtasim ibn al-Rashid, accompanied by several officers. They crushed him and foiled his designs—praise be to Allah.