Firishta's History (Gulshan-i Ibrāhīmī) 67.1.4

67.1.4

The coins of the Bahmuny dynasty were of a square form, and of different value; having on one side the creed of the faithful, and the names of the as'hab (the first four caliphs), while on the other side was the King's title, and the year of his reign in which the coin was struck. The Hindoo bankers, at the instigation of the Rajas of Beejanuggur and Tulingana, melted all the coins which fell into their hands, in order that those of the infidels might alone be current in the Deccan. Mahomed Shah, incensed against them on their persisting in the offence, put to death many persons guilty of such conduct, and limited the business of the mint and of the bank to a few Kuhtries, the descendants of inhabitants of Dehly who had formerly emigrated into the Deccan. After which, the Bahmuny coins alone were used in the Mahomedan dominions. Since the subversion of that dynasty, however, the coins of the Hindoo princes have been permitted to pass current.