https://blog.sami-aldeeb.com/2018/03/18/islamic-invasion-of-india-the-greatest-genocide-in-history/
...Muslim historian Firishta [full name Muhammad Qasim Hindu Shah, born in 1560 and died in 1620], the author of the Tarikh-i Firishta and the Gulshan-i Ibrahim, was the first to give an idea to the medieval bloodbath that was India during Muslim rule, when he declared that over 400 million Hindus got slaughtered during Muslim invasion and occupation of India.
Survivors got enslaved and castrated.
India’s population is said to have been around 600 million at the time of Muslim invasion. By the mid 1500’s the Hindu population was 200 million...
Brutal - but in the end, Hindu nationalists created Hindu India while most Muslims formed the split state of Pakistan.