Another extremely cruel, dehumanizing and degrading aspect of Islamic slavery was the large-scale castration of male captives…. There was widespread castration of slaves in Bengal during Mughal Emperor Jahangir which had become a widespread practice in India. it appears that since Bhaktiyar Khilji’s conquest of Bengal in 1205, it had become a leading source of enslavement and castration for supplying eunuchs” .
(Islamic Jihad, A Legacy of Forced Conversion, Imperialism, and Slavery. M.A. Khan, I Universe, 2009, p, 313).