Rubuta ci gaba don wannan sakin layi - Abu l-Abbas al-Fadl ibn Sahl ibn Zadhanfarukh al-Sarakhsi (; ya mutu a 818), mai suna Dhu 'l-Ri'āsatayn ("mutumin shugabannin biyu"), sanannen vizier ne na Farisa na zamanin Abbasid a Khurasan, wanda ya yi aiki a ƙarƙashin Khalifa al-Ma'mun (r. 813 <unk> 832). Ya taka muhimmiyar rawa a yakin basasa
tsakanin al-Ma'mun da dan uwansa al-Amin (r. 809<unk>813), kuma shi ne vizier na Abbasid Caliphate har zuwa 817.