Khwaja Abu Malik Isami is the author of Futuh-al-Salatin is yet another elaborate account of the Delhi Sultanate. It consists of almost 12,000 verses. The Futuh-us-Salatin is a history of Muslim rule in India until 1349-50.
The followers of Bhakti movement condemned polytheism and believed in one god. They also denounced all forms of idolatry and greatly emphasised on the fundamental unity of all religions.