"Muhammad Bihamad Khani, the author of Tarikh-i-Muhammadi, gives a clear idea of the keenness of the Muslim sultans and their subtle methods in obtaining converts. He writes that sultan Mahmud while fighting Rai Sumer in the vicinity of Irich “concluded that if he allowed his brave warriors to wage the war (outright), they would undoubtedly extirpate the infidels… but he deemed it fit to delay the operation (or advance slowly) in the hope that the infidels might accept Islam”."