Qutb-ud-Din Aybak also is said to have destroyed nearly a thousand temples, and then raised mosques on their foundations. The same author states that… - Murray Thurston Titus

That men imbued with Sufi doctrines early came to India there cannot be the slightest doubt ; but who these earliest comers were, or when they arrived, cannot be definitely ascertained. Sind, the first province of India to be invaded by Muslim armies, was also the first to be occupied by Muslim mystics, so that to-day it rightly claims the distinction of being the home of Indian Sufism. Nevertheless, no matter where one goes in India or Pakistan one finds Sufi influences powerful and active, fostered, no doubt, by the similar pantheistic doctrines that abound in Indian religious thought, which provide a very congenial atmosphere for their growth. In fact, because of the very widespread dissemination and influence of Sufi doctrines, attempts have been made by some Muslim theologians to find a way of reconciling them to orthodox Islam.

Not only was slaughter of the infidels and the destruction of their temples resorted to in earlier period of Islam's contact with India, but as we have seen, many of the vanquished were led into slavery. The dividing up of booty was one of the special attractions, to the leaders as well as to the common soldiers in these expeditions. Muhammad [Mahmud] seems to have made the slaughter of infidels, the destruction of their temples, the capturing of slaves, and the plundering of the wealth of the people, particularly of the temples and the priests, the main object of his raids. On the occasion of his first raid he is said to have taken much booty ; and half a million Hindus, ' beautiful men and women ', were reduced to slavery and taken back to Ghazni. When Muhammad later took Kanauj, in A. D. 1017, he took so much booty and so many prisoners that the fingers of those who counted them would have tired '.

In the year A.D. 1202, when Qulb-ud-Din captured Kalinjar, after the temples had been convened into mosques, and the very name of idolatry was annihilated, fifty thousand men came under the collar of slavery and the plain became black as pitch with Hindus.