Yoga Sutras: Sutra 1.19:
Videhas and Prakritilaya Yogis
See also this article for info about prakriti:
Prakriti and Its Evolutes: Returning to Self-Realization
YOGA SUTRA 1.19 Some who have attained higher levels (videhas) or
know unmanifest nature (prakritilayas), are drawn into birth in this
world by their remaining latent impressions of ignorance, and more
naturally come to these states of samadhi.
(bhava pratyayah videha prakriti layanam)
BHAVA = objective existence, becoming
PRATYAYAH = cause, cognitive principle, content of mind, cognition
VIDEHA = bodiless, disembodied
PRAKRITI = creative cause, subtlest material cause, nature
LAYANAM = dissolved, merged into
The videhas are the disembodied ones who have attained higher levels,
and the prakritiyas are those who have had their consciousness
experience, and merge into prakriti, which is the subtlest material
essence of the universe. While this may be a somewhat advanced state,
merging into prakriti is a detour, so to speak. Pure consciousness is
not experienced, but only the unmanifest prakriti. Merging into
prakriti is not the goal of Yoga.
Recall that this sutra is following through on sutras 1.17-1.18,
which outline the four levels of samadhi on an object, and objectless
samadhi. This sutra is describing one of two general types of
approach to these samadhis.
This sutra applies to few people. Most need to follow the second
path, which is in the sutra just below. In other words, if does not
come into this world as a videha or prakritilaya yogi, then the five-
fold path outlined in the next sutra (1.20) is the one to follow.