Yazid ibn al-Muhallab
After his failure at Constantinople, Maslama was dispatched to Iraq to quell the Kharijites. Following Umar's death and the accession of his brother Yazid II in 720, he was tasked with the suppression of the revolt of Yazid ibn al-Muhallab, whom he defeated and killed in August 720. He nevertheless fell out of favour with the Caliph, who resented and feared his power as governor of both Iraqs, as well as his interfering in the succession: Maslama favoured his brother Hisham over Yazid's son Walid. Yazid soon recalled Maslama from his post, ostensibly because he had failed to deliver his provinces' tax haul to Damascus, and replaced him by his protege, Umar ibn Hubayra.