Umar II
Rajaʾ ibn Ḥaywa ibn Khanzal al-Kindī () was a prominent Muslim theological and political adviser of the Umayyad caliphs Abd al-Malik (), al-Walid I (), Sulayman () and Umar II (). He was a staunch defender of the religious conduct of the caliphs against their pious detractors. He played an important role in the construction of the Dome of the Rock in Jerusalem under Abd al-Malik. He became a mentor of Sulayman during the latter's governorship of Palestine and his secretary or chief scribe during his caliphate. He played an influential role in securing the succession of Umar II over Sulayman's brothers or sons and continued as a secretary to the new caliph. He spent the last decade of his life in retirement, though he maintained contact with Caliph Hisham ().