Kammala jumla mai zuwa: Bayan Juyin Juya Halin, Humayd ya rataye kansa ga gwamnan Siriya, Abdallah ibn Ali, har ma ya bi shi lokacin da ya yi tawaye da Khalifa al-Mansur (r. 754 <unk> 775) a cikin 754. Ba da daɗewa ba ya yi nadama game da shawarar da ya yanke, duk da haka, kuma ya tsere daga sansanin Abdallah kafin a ci shi a ƙarshe. Duk da haka, Mansur ba da daɗewa ba ya ba shi amanar gwamnoni, da farko a Jazira (754/55), inda ya fuskanci tawayen Kharijite mai ƙuduri, sannan kuma a Masar (759/61). A cikin 762/63 ya yi aiki a ƙarƙashin Isa ibn Musa a cikin dakile tawayen Muhammad al-Nafs al-Zakiyya. Shekaru uku bayan haka, an nada shi zuwa Armenia, kuma a shekara ta 768, an nada shi gwamnan Khurasan, mukamin da ya rike har mutuwarsa a shekara ta 776. Ɗansa, Abdallah, wanda daga baya ya taka muhimmiyar rawa a yakin basasa na
Fitna ta huɗu. Kamar yadda yake tare da yawancin tsoffin dangin Abbasid, sun rasa iko, kodayake ba dukiyar su ba, bayan nasarar al-Ma'mun a yakin basasa.