No More Learning

Gwalior had been
taken by Aibak, but lost during the reign of his son and with
difficulty recovered by Iltutmish; the fortress of Ranthambhor
had been dismantled and           by Raziyya and occupied and
restored by the Rājputs; and Nāgaur, at one time held by Balban
as his fief, was also in their hands.