Yazid ibn al-Muhallab
Azkajwar is first mentioned in the mid-690s, when his kingdom was invaded by Umayya ibn Abdallah, who was the Abbasid governor of Khurasan. Azkajwar's capital, Kath, was shortly captured Umayya, who forced Azkajwar to recognize Abbasid suzerainty. However, after Umayya left Khwarazm, Azkajwar declared independence from the Abbasid Caliphate. During the early 700s, Yazid ibn al-Muhallab, the new Abbasid governor of Khurasan, invaded Khwarazm but was eventually repulsed by the forces of Azkajwar.