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.
Abu Rayhan Beruni or Alberonius (Latin) was a Persian Scholar and polymath of the 11th century. He accompanied Mahmud Ghazani in his conquests to South Asia.Al Beruni was the First Muslim Scholar to study India and its Brahmanical tradition. He is called father of Indology and the first anthropologist. He is called one of the earliest and greatest polymath of the Islamic World.