 This prompted Iltutmish to march against him in 1217.Qabacha initially retreated, but Iltutmish's army chased him and defeated him at a place called Mansura, which was located on the banks of the Chenab River.Iltutmish then captured Lahore in the winter of 1216-1217, and appointed his son Nasiruddin Mahmud to govern it.