Anuttarayoga Tantra (Sanskrit, Tibetan: bla na med pa'i rgyud), often translated as Unexcelled Yoga Tantra or Highest Yoga Tantra, is a term used in Tibetan Buddhism in the categorization of esoteric tantric Indian Buddhist texts that constitute part of the Kangyur, or the 'translated words of the Buddha' in the Tibetan Buddhist canon. In the New Schools of Tibetan Buddhism, Anuttarayoga Tantra is the highest of four classes and is associated with the Mahamudra route to enlightenment. According to the Gelugpa tradition, in Highest Yoga Tantra, the Buddha taught the most profound instructions for transforming sensual pleasure into the quick path to enlightenment, which in turn depends upon the ability to gather and dissolve the inner winds (Sanskrit: prana) into the central channel through