Firishta's History (Gulshan-i Ibrāhīmī) 6.7.3

6.7.3

Mahmood, having secured the wealth of Somnat, prepared to chastise the Indian prince Brahma Dew, the Raja of Nehrwala, who had assisted his countrymen during the siege, and who had cut off above 3000 of the faithful. Brahma Dew, after the taking of Somnat, instead of proceeding to Nehrwala, shut himself up in the fort of Gundaba, distant 40 fursungs from Somnat. The King having arrived before this fort, perceived it was surrounded on all sides by water, which, on account of its extent and depth, appeared impossible to approach; sending, however, to sound it, he understood that at one place it was fordable, though not easily to be passed by an army. Mahmood having ordered public prayers, and having cast his fortune on the Koran, entered the water at the head of his troops, and reaching in safety the opposite side, immediately made an assault upon the place. Brahma Dew fled at the approach of the Mahomedans; and the Hindoos who defended the fort, seeing themselves deserted, quitted their posts on the walls. The assailants, having obtained easy possession, made dreadful havoc among the men, reserving the women and children as captives. The wealth of Brahma Dew was lodged in the King's treasury.