In the very profound sutras, it is said that non-seeing is to see this. Here, there is no seeing and no seer, no beginning and no end, just peace. Entities and nonentities are left behind. It is non-conceptual and non-referential. It is inexpressible, unobservable, unchanging, and unconditioned. When it is realised by yogins, afflictive and cognitive obscurations are relinquished.

-- Atiśha