 Complete the following phrase:  In reward for his accomplishment, Abd al-Malik appointed Sulayman the head of Syrias fiscal administration, a post he held through the reigns of the caliphs sons and successors al-Walid I and Sulayman. After about one year into his reign, in 71819, Caliph Umar II dismissed Sulayman for unknown reasons. He was reappointed by Caliph Yazid II and was apparently kept in the post until Yazids death in 724, after which there is no further mention of Sulayman. His eldest son, Thabit, is briefly mentioned in 744 as holding an official post, the secretary of official correspondences under Caliph Yazid III, and had previously sheltered Yazid III in his Damascus residence during his rebellion against his predecessor, al-Walid II. In the aftermath of the 