Aurangzeb did this for two reasons: first, because by this time his treasures had begun to shrink owing to expenditure on his campaigns ; secondly, to force the Hindus to become Mahomedans. Many who were unable to pay turned Mahomedans, to obtain relief from the insults of the collectors. ... [Aurangzeb] was of the opinion that he had found in this tax an excellent means of succeeding in converting them, besides thereby replenishing his treasuries greatly...