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.
Firdausi was a persian poet and the author of Shahnameh also known as “Book of Kings”, which is one of the world’s longest epic and the national epic of Greater Iran.