"Sultan Balban was struck by the fact that many military grantees of land were unfit for service; they never went out on campaigns and yet had continued in possession of their land and its revenues. ... "Some of them went leisurely to perform their military duties, but the greater part stayed at home making excuses, the acceptance of which they secured by presents and bribes.... to the Deputy Muster-Master and his officials."... [Balban] left the above mentioned corrupt practice to continue unchecked, although its defects were more than obvious."