Some of the activities which were prevalent during the Delhi Sultanate period are as follows: religious persecution, prohibition of public worship and destruction of temples. These was often vigorously enforced by the early Muslim rulers.
Barani was a contemporary of Muhammad bin Tughlaq and Firuz Shah Tughlaq both. He wrote a number of renowned texts, such as the Fatwa-i-Jahandari, which elaborates on the principles to be followed by Muslim rulers to attain merit.