Firishta's History (Gulshan-i Ibrāhīmī) 46.4.8

46.4.8

In the year 824, Khizr Khan marched towards Mewat, taking and destroying the fort of Kotla. In this year, also, the Vizier dying, that office was conferred on his son, Mullik Sikundur Tohfa. From Kotla, Khizr Khan marched towards Gualiar, where he raised contributions and returned to Etawa, exacting tribute from the son of Soomur Ray. Khizr Khan, falling sick during this campaign, returned to Dehly, where he died on the 17th of Jumad-ool-Awul, 824, after a reign of seven years and a few months. Khizr Khan was esteemed a just, a generous and a benevolent prince, for the age in which he lived, on which account his death was much lamented by his subjects; and as a token of their respect for his memory the inhabitants of Dehly, by common consent, wore black for three days. After this the nobles, having assembled, consented to elevate Moobarik, the son of Khizr Khan, to the throne.