يزيد بن المهلب
In 702 AD Yazid ibn al-Muhallab defeated certain Arab rebels, followers of Ibn al-Ash'ath, and forced them out of Herat. The city was the scene of conflicts between different groups of Muslims and Arab tribes in the disorders leading to the establishment of the Abbasid Caliphate. Herat was also a centre of the followers of Ustadh Sis.