Yazid ibn al-Muhallab
Sulayman ibn Abd al-Malik was hailed as caliph the day al-Walid died. He appointed Yazid ibn al-Muhallab governor of Mesopotamia. Sulayman ordered the arrest and execution of the family of al-Hajjaj, one of two prominent leaders (the other was Qutayba ibn Muslim) who had supported the succession of al-Walid's son Yazid, rather than Sulayman. Al-Hajjaj had predeceased al-Walid, so he posed no threat. Qutaibah renounced allegiance to Sulayman, though his troops rejected his appeal to revolt. They killed him and sent his head to Sulayman. Sulayman did not move to Damascus on becoming Caliph, remaining in Ramla. Sulayman sent Maslama ibn Abd al-Malik to attack the Byzantine capital (siege of Constantinople). The intervention of Bulgaria on the Byzantine side proved decisive. The Muslims sustained heavy losses. Sulayman died suddenly in 717.