The ceiling rests on columns raised with two pillars each robbed from an earlier Hindu shrine; carved lintels from another were found embedded in the… - Iltutmish

…And in the year AH 631 (AD 1233) having made an incursion in the direction of the province of Malwah and taken Bhilsa and also captured the city of Ujjain, and having destroyed the idol-temple of Ujjain which had been built six hundred years previously, and was called Mahakal, he levelled it to its foundations, and threw down the image of Rai Vikrmajit from whom the Hindus reckon their era… and brought certain other images of cast molten brass and placed them on the ground in front of the door of the mosque of old Dihli and ordered the people to trample them under foot…

Cunningham's observations made in 1871/72 should be taken even more seriously because his impartiality would be beyond doubt. There would be no bias as between the Hindu and Muslim viewpoints . In the ASI report of those years he has written that the tomb of Sultan Chari, with its domes of overlapping courses, appears to be pre-Muhammadan, but when to this feature we add the other Hindu features, both of construction and ornamentation, the stones set without cement in the walls, the appearance of wear or weathering of the stones, greater even than in the Kutb, though similar in material, and the fact that the inner cell was originally finished in granite, but afterwards cased with marble, it becomes extremely probable that this is, like the Kutb, a Hindu building appropriated by the Muhammandans, and the probability is rendered almost a certainty by the existence of the central cell, which is a construction adapted to some Hindu forms of worship, the Saivic, but which is an anomaly in Muhammadan architecture.

After the reduction of Gualiar, the King marched his army towards Malwa, reduced the fort of Bhilsa, and took the city of Oojein, where he destroyed a magnificent temple dedicated to Mahakaly, formed upon the same plan with that of Somnat. This temple is said to have occupied three hundred years in building, and was surrounded by a wall one hundred cubits in height. The image of Vikramaditya, who had been formerly prince of this country, and so renowned, that the Hindoos have taken an era from his death, as also the image of Mahakaly, both of stone, with many other figures of brass, were found in the temple. These images the King caused to be conveyed to Dehly, and broken at the door of the great mosque.