Kammala jumla mai zuwa: Al-Fadl ibn al-Rabi (, 757/8<unk>823/4), yana ɗaya daga cikin manyan jami'an Abbasid a zamanin Harun al-Rashid () da al-Amin (), wanda ya yi aiki a matsayin chamberlain da babban minista. Fadl ya taka muhimmiyar rawa a matsayinsa na babban mai tayar da zaune tsaye.
yakin basasa da ya barke bayan mutuwar Harun, yana goyon bayan al-Amin a kan dan uwansa al-Ma'mun (). Bayan nasarar al-Ma'mun ya ɓoye, amma daga ƙarshe ya sulhunta da sabon mai mulki.