"From old records and the tradition it is gathered... Wherever they found magnificent temples of the Hindus ever since the establishment of Sayyid Salar Mas’ud Ghazi’s rule, the Muslim rulers in India built mosques, monasteries, and inns, appointed mu’azzins, teachers, and store-stewards, spread Islam vigorously, and vanquished the Kafirs.... And this to such an extent that all over Hindustan no trace of infidelity was left besides Islam and no practice of idol-worship survived besides worship of God. And the few Hindus who remained safe from the hands of the Muslims became the slaves of Islam, began to pay kharaj, became subdued... In short, even as the Muslim rulers cleared up Mathura, Banares etc from the dust and dross of infidelity ... Likewise, they cleared up Faizabad and Avadh, too, from the filth of reprobation (infidelity), because it was a great centre of worship and capital of Rama’s father. Here they broke the temples and left no stone-hearted idol intact. Where there stood the great temple (of Ramjanmasthan), there they built a big mosque, and, where there was a small mandap (pavilion), there they erected a camp mosque (masjid-i mukhtasar-i qanati). The Janmasthan temple is the principal place of Rama’s incarnation, adjacent to which is the Sita ki Rasoi. Hence, what a lofty mosque was built there by king Babar in 923 A. H. (1528 A.D.), under the patronage of Musa Ashiqan! The mosque is still known far and wide as the Sita ki Rasoi mosque. And that temple is extant by its side."
January 1, 1970
https://en.wikiquote.org/wiki/Conversion_of_non-Islamic_places_of_worship_into_mosques