Yoga Sutras of Patanjali, Chapter 1, Sutra 18

"(Asamprajñata) is the other (samadhi), having as its prerequisite the practice of the cognition and causal principle of cessation and leaving its samskara as residue." Swami Veda Bharati

Explanation: After attaining the previous, samprajñata samadhi, and through supreme non-attachment, Para-vairagya, the practitioner may attain a arrested state of mind known as nirvîja samadhi, in which the concentration is without an object. When the concentration on arrested state of mind becomes habitual, it is called asamprajñata samadhi and this may lead to kaivalya, in which the Seer rests in its own nature without the presence of the I-sense—the state of liberation.

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