The Muslim army reached Tabuk after a weary march. Contrary to expectations there was no Byzantine force at Tabuk to meet the Muslims. On coming to know of the advance of the Muslim army, the Byzantines withdrew their army well within Syria. The Muslims achieved their object without firing a shot. The strategy of the Muslims was purely defensive, aimed at keeping the Byzantines army away from the borders of Arabia. The Byzantines who had at one time threatened to invade Arabia were no longer in the mood to measure swords with the Muslims. This was a moral victory for the Muslims. The tribes in the border region who had heretofore offered allegiance to the Byzantines transferred their allegiance to the Muslims.