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.
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.