Firishta's History (Gulshan-i Ibrāhīmī) 74.2.4

74.2.4

In the year 829, Ahmud Shah marched to reduce a rebellious zumeendar of Mahoor, who still held several strong places which held out against his troops. The rebel soon submitted; but Ahmud Shah, though he had assured him of pardon, put him to death in violation of his promise as soon as he fell into his hands, together with five or six thousand of his followers, compelling, at the same time, all the captive women and children to embrace the true faith. During this campaign, the King obtained possession of a diamond mine at Kullum, a place dependent on Gondwara, in which territory he rased many idolatrous temples, and erecting mosques on their sites, appropriated to each some tracts of land to maintain holy men, and to supply lamps and oil for religious purposes. At this time he remained nearly a year at Elichpoor, during which he constructed the fort of Gavul, repaired the fortress of Narnala, and subsequently returned to Koolburga.