"At the close of the Khalji regime, Ghayasuddin Tughlaq declared himself as a champion of the faith, because the Ulema had been dissatisfied with Alauddin's policies and Ghayasuddin with the activities of Nasiruddin Khusrau. "The slogan of revenge for religion, so common yet so effective in the history of the Muslims, was started." And this to a great degree won Ghayasuddin Tughlaq the throne."
January 1, 1970
https://en.wikiquote.org/wiki/Tughlaq_dynasty