Buuxi weedhan soo socota: Waxaa loo magacaabay bishii Maarso 811 khaliifka al-Amin, isagoo badalay Hatim ibn Harthamah ibn A'yan. Wax yar ka dibna waxaa lagu qasbay inuu la dagaalamo cudurka
dagaalka sokeeye ee u dhexeeya al-Amin iyo walaalkiis al-Ma'mun, iyo muddo yar ka dib daacadnimadiisa sii socotay ee kii hore ayaa isaga kala saaray koox ka mid ah "jund" ee maxalliga ah oo uu hoggaaminayo al-Sari ibn al-Hakam, oo doorbiday in loo aqoonsado al-Ma'mun inuu yahay khaliif. Gu'gii 812 "Jund", oo ay ku dhiirigelisay al-Ma'mun, waxay si cad u beddeleen daacadnimadooda oo ay ku kacaan, Jabir waxaa laga tuuray jagadiisa. Taageerayaashii al-Ma'mun, Abbad ibn Muhammad ibn Hayyan, ayaa markaa la wareegay guddoomiyaha gobolka oo xukunka la wareegay Fustat, laakiin qaybo kale oo ka mid ah Masar ayaa sii waday inay daacad u noqdaan al-Amin oo hoos yimaada guddoomiyaha ka soo horjeeda Rabi'ah ibn Qays ibn Zubayr al-Jurashi.