Sutra 18 - Yoga Sutras of Patanjali

Viraama pratyayaa bhyaasa puurvaha

Sanskaara Sheso Nyaha

Shri Brahmananda Sarasvati translation:

"In asamprajnata samadhi, there is a complete cessation (virama) of all wanderings and "ups" and "downs" of the mind (pratyayas), and the mindstuff retains only unmanifested impressions (sanskaara-shesah); that is to say, the seeds of all karmas become like fried seeds or burnt rope and, therefore, they can no longer germinate or bind.  The principle of individual "I-am" transforms itself into universal "I-am" beyond the body and mind, and it shines like the blue sky.  This is the natural state of the still mind:  "Be still and know I am That I-AM."

Asamprjanata samadhi is effortless, automatic, natural, and spontaneous, while samprajnata samadhi depends on effort.  It leads to asamprajnata samadhi when it becomes mature."