The ultimate essence of Atiyoga practice is abiding in contemplation. In the beginning, for the authentic state of contemplation to arise, it is indispensable to “separate,” or distinguish, mind from the state of pure instant presence, the nature of mind. Numerous upadeshas have this aim, but one that stands out as particularly simple to apply is Khorde Rushen, the separation of samsara and nirvana. Three forms of this practice are generally presented: outer, inner, and secret.
In Outer Rushen, the practice is to spontaneously enact anything whatsoever with the body, the voice, and the mind, without any choice or restraint as what to do and what not to do. At the end, exhausted from all the activities, you simply relax in the natural state that is your primordial condition. This book presents Chögyal Namkhai Norbu’s teachings on Outer Rushen based on Vimalamitra’s commentary on the Dzogchen Upadesha root tantra known as the Dra Thalgyur (sGra thal ’gyur), The All-Penetrating Sound. It includes Vimalamitra’s commentary in Tibetan along with a translation into English.