 Other historical records from "wazirs", "amirs" and the court historians of various Sultans of the Delhi Sultanate describe the grandeur of idols and temples they witnessed in their campaigns and how these were destroyed and desecrated.In 1193, the Nalanda University complex was destroyed by Afghan Khalji-Ghilzai Muslims under Bakhtiyar Khalji; this event is seen as the final milestone in the decline of Buddhism in India.He also burned Nalanda's major Buddhist library and Vikramshila University, as well as numerous Buddhist monasteries in India.