The etayaiva savicara nirvicara ca suksmavisaya vyakhyata sutra delineates about the complete vacuum state of the being. One can reach a supra-conscious state of realism, by pondering over the subtle elements of existence. And when one gains transformation in this process, elevating to a state liberated from all kinds of mortal senses, perfect ecstasy is established.

etaya by this
eva also savicara reflection, deliberation, consideration, investigation nirvicara without reflection, not needing any consideration ca and suksmavisaya subtle object, subtle thing vyakhyata related, explained, expounded, commented upon

The contemplation of subtle aspects is similarly explained as deliberate (savicara samapatti) or non-deliberate (nirvicara samapatti).

Transformation of the consciousness by contemplation on subtle objects like the ego (ahamkara), intelligence (buddhi) or the equivalent of the elements (sound, touch, sight, taste and smell), or the qualities of luminosity, vibrancy and dormancy of nature, conditioned by space, time and causation, is savicara samapatti. Without these reflections it becomes nirvicara samapatti.

In nirvicara samapatti, the sadhaka experiences a state without verbal deliberation. All the subtle objects reflected in savicara are eliminated. He is free from memory, free from past experiences, devoid of all past impressions. This new state of contemplation is without cause and effect, place or time. The inexpressible states of pure bliss (ananda) and pure self (sasmita) rise to the surface and are experienced by the sadhaka.