"But the Arabs, inspired as they were by an imperialist ideology, did not give up. .... The war against Kabul was renewed in AD 695 when Hajjaj became the governor of Iraq. He sent an army under Ubaidullah, the new governor of Seistan. Ubaidullah was defeated .... Once again, the treaty was denounced by the Caliph, and another general, Shuraih, tried to advance upon Kabul. He was killed by the Hindus, and his army suffered huge losses as it retreated through the desert of Bust. Poor Ubaidullah died of grief. That was the third round won by the Hindu kingdom of Kabul.... The Arabs had failed once again to conquer finally another small Hindu principality, in spite of their being the mightiest power on earth. The struggle had lasted for more than two hundred years. ... The kingdom of Kabul suffered a temporary eclipse in AD 870 but not on account of the Arabs, nor as a result of a clash of arms. The Turkish adventurer, Yaqub bin Layth, “who started his career as a robber in Seistan and later on founded the Saffarid dynasty of Persia”, sent a message to the king of Kabul that he wanted to come and pay his homage. The king was deceived into welcoming Yaqub and a band of the latter’s armed followers in the court at Kabul. Yaqub “bowed his head as if to do homage but he raised the lance and thrust it into the back of Rusal so that he died on the spot”. A Turkish army then invaded the Hindu kingdoms of both Kabul and Zabul. The king of Zabul was killed in the battle, and the population was converted to Islam by force. ... But the succeeding Hindu king of Kabul who had meanwhile transferred his capital to Udbhandapur on the Indus, recovered Kabul after the Saffarid dynasty declined. Masudi who visited the Indus Valley in AD 915 “designates the prince who ruled at Kabul by the same title as he held when the Arabs penetrated for the first time into this region”."