The book 'Tabaqat-i-Nasiri' is authored by 'Minhaj-i-Siraj'. Tabaqat-i- Nasiri, named for Sultan Nasir-ud-Din, is an elaborate history of the Islamic world written in Persian and completed in 1260. The book contains the history of the Sultans of Delhi, the achievements of the Ghaznavids, the foundation of the Mongol dominion and the destruction of Ismailies.