Tibetan tantric practice, also known as "the practice of secret mantra", and "tantric techniques", refers to the main tantric practices in Tibetan Buddhism. The great Rime scholar Jamgön Kongtrül refers to this as "the Process of Meditation in the Indestructible Way of Secret Mantra" and also as "the way of mantra," "way of method" and "the secret way" in his Treasury of Knowledge. These Vajrayāna Buddhist practices are mainly drawn from the Buddhist tantras and are generally not found in "common" (i.e. non-tantric) Mahayana. These practices are seen by Tibetan Buddhists as the fastest and most powerful path to Buddhahood.