By 12th century AD Buddhism had declined in India. It had become a victim to the evils of Brahmanism against which it had fought in the beginning. The Buddhist monks had given up use of people’s language Pali and had taken up Sanskrit thus alienating masses.
The Buddhist monasteries had come to dominate by the corrupt practices that Gautama Buddha had strictly prohibited. The period also saw the emergence of new sect of Buddhism known as Vajrayana and entry of women into the Buddhist Sanghas. The Brahmanical system was reinventing itself and attracting people back to its fold.