Three Wisdoms
Rigpa has three wisdoms, two of which are kadag and lhun grub. Kadag (primordial purity) is the Dzogchen view of emptiness. Lhun grub (natural formation) is the Dzogchen view of dependent origination. Throughout Mahayana, emptiness and dependent origination are two sides of the same coin. Kadag deals with tregchöd. The lhun grub aspect has to do with esoteric practices, such as (but not limited to) Thödgal, that self-liberate the dependently originated human body into the Sambhogakāya (rainbow body phenomenon). The symbol of Dzogchen is a Tibetan A wrapped in a thigle (see picture to the right). The A represents kadag while the thigle represents lhun grub. The third wisdom, thugs rje (compassion), is the inseparability of the previous two wisdoms.
In Dzogchen, a fundamental point of practice is to distinguish rigpa from sems (mind). The distinguishing of rigpa and sems from each other is emphasized by Jigme Lingpa and goes back to the seventeen tantras.
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