The most learned and accurate historians agree in this, that whereas after the disturbances and dissensions which had occurred among the people the supreme authority was eventually vested in Mo'âwiyah-bin-Harb-bin-Sofyân, nevertheless Mo'âwiyah exercised no jurisdiction whatever over 'Omân. It was not until 'Abdu-'l-Málik-bin-Marwân suc- ceeded to the sovereignty that an attempt was made to reduce it to subjection. It took place on this wise:— 'Abdu-'l-Málik had appointed el-Hajjâj-bin-Yûsuf, eth-Thákify, governor over 'Irâk. According to concurrent testimony, Suleimân and Sáîd, the sons of 'Abbâd-bin-el-Julánda, of the lineage of its Sultâns, at that time ruled over 'Omân. El-Hajjâj was the first to send troops against them under successive commanders, but they were generally repulsed with the loss of their baggage. At length he was advised to dispatch an expedition under the command of el-Kâsirn-bin-Sh'iwah, el-Máziny, who embarked a large force in ships, and, on reaching the coast of 'Omân, anchored near the village of Hatât. Suleiman-bin-JAbbad attacked him at the head of the Azdites, and after a fierce encounter the invaders were routed, el-Kâsim and a number of his men were slain, and their equipage fell into the hands of the victors. Some state that none escaped; but God knows.