That the practice of utilizing the spoils of Hindu temples continued throughout the reign of Sultan Iletmish is proved by the Mosque of Ukha in Bayan… - Iltutmish

After he had reached the capital he sent, in A.H. 632 (1234 A.D.), the army of Islam towards Malwa and took the fort and city of Bhilsa. There was a temple there which was three hundred years in building. It was about one hundred and five gaz high. He demolished it. From thence he proceeded to Ujjain, where there was a temple of Maha-kal, which he destroyed.

Next, Sultan Iltutmish (r. 1210–36) spent his early years in suppressing the Turkish opponents. He was also in fear of invasion by Genghis Khan. In 1226, he attacked Ranthambhor. Minhaj Siraj records that ‘much plunder fell into the hands of his followers;’dccvii the plunder obviously included slaves. In the 1234–35 attack of Ujjain, he made captives of the ‘women and children of the recalcitrant,’ according to Shiraj and Ferishtah.

During his expedition to Gwalior, Iltutmish (1210-36) massacred 7000 persons besides those killed in the battle on both sides. His attacks on Malwa (Vidisha and Ujjain) were met with stiff resistance and were accompanied by great loss of life. He is also credited with killing 12,000 Khokhars (Ghakkars) during Aibak's reign.