Cessation
So, nothingness as a space goes so deep that after a while it
eliminates the consciousness of itself...
This experience is called cessation or extinction: complete death.
It is what people usually think of as death. It is exactly how
death is. You don't have to die physically to experience it. This
does not necessarily mean that if you die physically you'll experience
this kind of death. It is the complete cessation and absence of
everything. As I said, this experience is needed partly because
the personality has its own consciousness, which has to go. However,
after it goes it is possible for another kind of consciousness
to be there to experience the complete, unbounded, limitless space
as it is. (Diamond Heart Book 2, pg 18)

Cessation & Space
As this space arises, the individual encounters
fears of death, of disappearing, of annihilation, of nonexistence.
This space is actually the experience of nonexistence, of complete
extinction of self, of cessation. The cessation can be so deep
that even awareness and consciousness cease for a time. The person
here is not only afraid of the death of the body, but is also
afraid that his mind will cease to exist. And this cessation
of mind is exactly the experience of this space. (The Void)

Cessation & The Point
This realization goes beyond cessation to the realization of
selflessness, which is equivalent to the realization of the absolute
truth of Being. An avalanche of perceptions and insights arises
at this point; here we will note a few that are most relevant
for our understanding of the transformation of narcissism and
its relation to self-realization. (The Point of Existence)

Understanding of Cessation
When consciousness returns it has the fresh and precise clarity
of the faceted form. The understanding which manifests does not
feel separate from the sharp, faceted presence. The precise faceted
form of presence discloses itself as the precise understanding
of cessation, the annihilation of consciousness. (Luminous Night's
Journey)