Pedzisa mutsara unotevera: Pakuvamba muna 811, nokuparuka kwe
hondo yevagari vemo pakati al-Amin uye munun'una wake al-Ma'mun (), uyo akanga apiwa hombe viceroyalty nharaunda kunosanganisira Khurasan, al-Amin akavimba Ali pamwe vachikunda al-Ma'mun nevateveri vake. Achitungamirirwa neuto guru revarume vanosvika zviuru makumi mashanu vanonzi vakabva ku "abna", Ali akafamba achienda kumabvazuva, asi muhondo yeRayy musi wa3 Chikunguru 811 akakundwa nekuparadzwa akaurayiwa neuto diki real-Ma'mun pasi paTahir ibn al-Husayn.