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 kingdom was divided into different administrative units during the rule of the Vijayanagar empire in southern India which ruled from 1336 CE to 1672 CE. These administrative units were called Mandalams, Nadus, Sthalas, and Gramas.