The defeat of the Arab army, and the casualties suffered, was a catalyst for the almost complete collapse of Muslim rule in Transoxiana over the next few years.[15][17][18] In the words of the British scholar H. A. R. Gibb, "it was practically the last aggressive expedition of the Arabs into Transoxania for fifteen years, but of much greater importance was the blow which it struck at Arab prestige. The roles were reversed; from now onwards the Arabs found themselves on the defensive and were gradually ousted from almost every district across the Oxus."[19] The new Umayyad governor, Asad al-Qasri, campaigned incessantly over the next few years, but without achieving any major result.