Kammala jumla mai zuwa: Yahaya ɗan "mawla" na Farisa ne Mu'adh ibn Muslim, fitaccen memba na "Khurasaniyya", wanda ya yi wa Abbasids na farko aiki a matsayin gwamna da janar. A cikin 806, Khalifa Harun al-Rashid ya aika da Yahya zuwa Siriya don murkushe shugaban 'yan fashi Abu al-Nida. Yahya ya cika wannan aikin, kuma ya yi aiki a matsayin gwamnan dukan Siriya na shekara guda. Daga nan sai ya bi Harun a cikin tafiyarsa zuwa Khurasan don fuskantar tawayen Rafi ibn al-Layth, kuma bayan mutuwar Harun a 809 ya kasance a Khurasan tare da ɗan na biyu na Harun, al-Ma'mun. Lokacin da
yakin basasa tare da al-Amin ya barke, an ba shi mukamin vizier ga al-Ma'mun amma ya ƙi - mukamin ya tafi al-Fadl ibn Sahl - kuma bai shiga cikin rikici ba. Bayan karshen yakin basasa ya yi aiki a matsayin gwamnan Jazira da Armenia, kuma ya shiga fagen fama da Khurramites na Babak Khorramdin. Ya mutu a cikin 821/822.