Haig writes that “it is evident, from the numerical superiority in Eastern Bengal of the Muslims… that at some period an immense wave of proselytization must have swept over the country and it is most probable that the period was the period of Jalaluddin Muhammad (converted son of Hindu Raja Ganesh) during whose reign of seventeen years (1414-1431)… hosts of Hindus are said to have been forcibly converted to Islam”.81 With regard to these conversions, Dr. Wise writes that “the only condition he offered were the Koran or death… many Hindus fled to Kamrup and the jungles of Assam, but it is nevertheless probable that more Muhammadans were added to Islam during these seventeen years (1414-31) than in the next three hundred years”.
Wolseley Haig, C.H.I., III, p. 267. quoted from Lal, K. S. (1992). The legacy of Muslim rule in India. New Delhi: Aditya Prakashan. Chapter 6