Asamprajñāta samādhi is the higher absorption of classical yoga, reached through dispassion, in which no object is held and the movements of the mind cease. Only impressions remain, and these are gradually burned away. It is called samādhi without seed, and it prepares for kaivalya.
Asamprajñāta samādhi
Absorption without an object, in which only latent impressions remain, leading toward liberation.
Also: samadhi without seed