 Complete the following phrase:  Al-Walid ibn Hisham was the grandson of al-Walid ibn Uqba from the Abu Muayt line of the Umayyad clan. In 71213 he led a raid into Byzantine territory as far as the fortress of Gazelon called Ghazala by the Arabs near Amasya in northern Anatolia. According to al-Waqidi, al-Walid alongside Amr ibn Qays al-Kindi led a further expedition against the Byzantines in 71617, in the course of which several Arab troops from the army of Antioch were slain. He reached as far as the outskirts of Constantinople, where he killed a number of the inhabitants and took several captives. This was during the initial stages of the 