Liberation upon arising.

Our coarse experience of the world is the variety of appearances and experiences we encounter with the mind as the subject.

The subtle experience of appearances is recognizing them as the expression of awareness.

Realizing the nature of rigpa you eliminate all grasping without having to apply any antidotes.  Fixation is immediately cut through and you directly perceive the true nature of reality.
Realizing this self-arising wisdom from your own experience, all objects and mind are cut through at the root.  All that appears from this state is the expression of awareness, liberated upon arising.

Contemplation of the second nail of Shri Singha's Seven Nails.

Single sphere of rigpa.

Awareness and basic space are inseparable.
This single sphere is the basis for samsara and nirvana.
If we don't understand confused appearances as the potency of awareness,
we get stuck in the experience of samsara.

Awareness is transparent.  Basic space is transparent.
To the Dzogchen yogi, all phenomena are clear appearances.
All that appears and exists within samsara and nirvana is the originally pure single sphere.
Driving the nail of one's own experience of this transparent wisdom into the ultimate sphere of samsara and nirvana, one gains certainty free from all doubts.

Contemplation on the first nail of Shri Singha's Seven Nails