His capture of the southern caverns of Cappadocia and the fortress of Ancyra in 739 marked the last Umayyad military gains in the wars with Byzantium.

Umm Hakim, like her mother Zaynab bint Abd al-Rahman, was well known for her beauty, and her fondness for wine was the subject of contemporary poetic verses preserved in the Kitab al-aghani (Book of Songs) of Abu al-Faraj al-Isfahani (d.

[11] Along with a number of his brothers, Maslama came under the tutelage of one of the major Muslim scholars of his time, Ibn Shihab al-Zuhri.

[12] Hisham appointed Maslama to lead the Hajj pilgrimage to Mecca in November 737, accompanied by al-Zuhri,[13] who advised him in the operation.

[11] Maslama commanded the summer expedition against the Byzantine Empire in 739, taking control of al-Matamir, the cavernous southern half of Cappadocia, and besieged and captured Ancyra (modern Ankara).

[17] Although he avoided arrest by al-Walid, nothing is heard of him in the sources thereafter and the historian Clifford Edmund Bosworth presumes he may have been executed by the Abbasids during the massacre of the Umayyad family at the river of Antipatris (Nahr Abi Futrus in Arabic) in 750, following the Umayyad dynasty's collapse in the Abbasid Revolution.

[5] Maslama had been infertile until he was reportedly healed by the father of Khalid ibn Barmak, the progenitor of the Barmakid family who came under the patronage of Caliph Hisham.