Although the mind is temporarily extinguished herein, nonetheless, when one encounters the appropriate causes and conditions, one is reborn yet again. This situation is analogous to that of a person who has fallen into a dreamless sleep in which the thoughts of the mind are not active. When he reawakens then they do exist once again. In this there is no erroneous thought nor does it extinguish thought in the manner of the forcibly created no-thought absorption. In this case, is on account of the power of wisdom that one achieves a state free of thought.
Thought still exists in such a case.
Because it is subtle, one remains unaware of it. In the Dharma of the Buddha, this consciousness associated with the absorption of neither perception nor non-perception is seen to abide in dependence upon the other four aggregates. Because these four aggregates are subsumed within the sphere of causes and conditions, they are impermanent. Because they are impermanent, they are characterized by suffering. Because they are impermanent and characterized by suffering, they are empty.