Describe the destruction of Nalanda University and its impact on Indian Buddhism.

Bakhtiyar Khiljī destroyed Nalanda University around 1203–04, slaughtering many monks and looting enormous wealth. The famous library with lakhs of manuscripts in three multi-storey buildings burned for months. Tibetan scholars fled with manuscripts to Tibet. This destruction precipitated the decline of Buddhism in India. About 30 years later, only one 90-year-old teacher remained, teaching approximately 70 students, marking the tragic end of this great centre of learning.