"In Sha’ban, 646 H. (Nov. 1248), the royal army marched through the upper country to the neighbourhood of the Biyah, and then returned to the capital. Ulugh Khan with several nobles under him, was sent with an ample force towards Rantambhor, to overrun the mountains of Mewat and the country of Bahar-deo, who was the greatest of the Rais of Hindustan. He ravaged the whole of those territories and gained a large booty. Malik Bahau-d din Aibak was slain under the fort of Rantambhor, on Sunday, in the month of Zi-1 hijja 646, while Ulugh Khan was engaged fighting in another quarter. The Khan’s soldiers showed great courage and fought well; they sent many of the infidels to the hell, and secured great spoil; after which they returned to the capital...."