= Muhammad ibn Ali ibn Abd Allah ibn al-Abbas 1 – Abu al-Abbas as-Saffah … 2 – Abd Allah al-Mansur 3 – Muhammad al-Mahdi 4 – Musa al-Hadi … 5 – Harun al-Rashid … 5 – Ibrahim 6 – Muhammad al-Amin … 8 – Muhammad al-Mu‘tasim … 7 – Abd Allah al-Ma'mun 9 – Harun al-Wathiq … 10 – Ja‘far al-Mutawakkil … 12 – Ahmad al-Musta‘sim 14 – Muhammad al-Muhtadi billah 11 – Muhammad al-Muntasir … Talha al-Muwaffaq … 13 – Muhammad al-Mu‘tazz billah … 15 – Ahmad al-Mu‘tamid ‘ala Allah 16 – Ahmad al-Mu‘tadid 17 – Ali al-Muktafi billah … 18 – Ja‘far al-Muqtadir … 19 – Muhammad al-Qahir 22 – Abd Allah al-Mustakfi Ishaq 23 – al-Fadl al-Muṭi‘ … 25 – Ahmad al-Qadir billah … 21 – Ibrahim al-Mutqi … 20 – Ahmad al-Radi 24 – Abd al-Karim al-Tā’i‘ … 26 – Abd Allah al-Qā’im bi-Amr Allah