"HINDOO, A person of Indian religion and race. This is a term derived from the use of the Mahommedan conquerors... In the following quotation from a writer in Persian observe the distinction made between Hindu and Hindi : c. 1290.— "Whatever live Hindu fell into the King's hands was pounded into bits under the feet of elephants. The Musalmans, who were Hindis (country born), had their lives spared."— Amir Khusrow."
January 1, 1970
https://en.wikiquote.org/wiki/Hindu