Mezue ahịrịokwu na-esonụ: Onye caliph al-Amin họpụtara ya n'ọnwa Machị nke afọ 811, dochie Hatim ibn Harthamah ibn A'yan. N'oge na-adịghị anya mgbe nke ahụ gasịrị, a manyere ya ịlụ ọgụ na ntiwapụ nke
agha obodo dị n'etiti al-Amin na nwanne ya nwoke al-Ma'mun, na n'oge na-adịghị anya iguzosi ike n'ihe ya na nke mbụ ahụ mere ka ya na ndị otu "jund" nke obodo ahụ nke al-Sari ibn al-Hakam duziri, nke kwadoro ịmara al-Ma'mun dị ka caliph kama. N'oge opupu ihe ubi nke afọ 812, ndị "jund", site n'agbamume nke al-Ma'mun, gbanwere iguzosi ike n'ihe ha n'ihu ọha ma nupụ isi, a kwaturu Jabir n'ọkwá ya. Onye na-akwado al-Ma'mun, Abbad ibn Muhammad ibn Hayyan, wee were ọkwa gọvanọ wee were ike na Fustat, mana akụkụ ndị ọzọ nke Egypt nọgidere na-eguzosi ike n'ihe nye al-Amin n'okpuru onye na-emegide gọvanọ Rabi'ah ibn Qays ibn Zubayr al-Jurashi.