Pedzisa mutsara unotevera: Muna 810, mutongi al-Amin, nomunun'una wake, Al-Ma'mun, vakapinda mukukakavadzana, uko gare gare kwakatungamirira kuhondo yavagari vemo; muna January 811, al-Amin akatanga nenzira yapamutemo
Hondo Huru yeAbbasid Civil War paakagadza Ali ibn Isa semubati weKhurasan, akamuisa kumusoro kweuto guru risingawanzoitika revanhu zviuru makumi mana, rakatorwa kubva muboka revakuru rinozivikanwa se "abna ', ndokumutuma kuti abvise al-Ma'mun. Apo Ali ibn Isa akaenda kuKhurasani, anonzi akaenda nechikwata chamaketani esirivha okubatanidza nawo al-Ma'mun ndokumutakura kudzokera kuBaghdad. Mashoko okusvika kwaAli akaita kuti Khurasan atye, uye kunyange al-Ma'mun akarangarira kutiza. Mauto bedzi aaigona kushandisa aiva uto duku revarume vanenge 4 000 kusvika ku5 000, raiva pasi paTahir. Tahir akatumwa kunotarisana nokufambira mberi kwaAli, asi kwakanga kuchirangarirwa zvikuru sechinenge chiito chokuzviuraya, kunyange nababa vaTahir vamene. Mauto maviri aya akasangana paRayy, kumiganhu yekumadokero kweKhurasani, uye hondo yakatevera (3 Chikunguru 811) yakaguma nekukunda kukuru kweKhurasani, umo Ali akaurayiwa uye uto rake rakaparara parutivi rwekumadokero.