Arriving near Kumbalmer the Sultan prepared to destroy the temple of Bana Mata in Kelwara. A Rajput chieftain named Deep Singh collected his warriors and opposed the Sultan. For seven days Deep Singh successfully repulsed all attempts of the Sultans army to take possession of the temple. On the seventh day, Deep Singh was killed and the temple fell into the hands of the Sultan. He razed it to the ground and destroyed the stone image that was kept in the temple. Flushed with success, he started for Chittor, and leaving a part of his army to take the fortress, advanced to attack Rana Kumbha, sending his father, Azam Humayun, towards Mandsaur to lay waste to the Rana's country.
When Rana Kumbha heard of these events, he left Haraoti to return to his dominions and came upon the Sultan's army near Mandalgarh. A battle was fought here without any decisive result. A few days later the Rana made another attack on the Sultan who was utterly defeated and fled towards Mandu.
To retrieve this disaster, Mahmud set about preparing another army, and four years later, on 11-12 October 1446 A.D. he went towards Mandalgarh with a large army. Rana Kumbha attacked him while he was crossing the Banas River, and having defeated him drove him back to Mandu.