Yoga Sūtra Chapter Four verse 8

ततः तद्विपाकानुग्णानामेवाभिव्यक्तिः वासनानाम् ॥८॥

tataḥ tat-vipāka-anuguṇānām-eva-abhivyaktiḥ vāsanānām ||8||

From that,
indeed the manifestation of latent impressions
that have similar qualities to the result.

tatas - hencetat - that, thisvipāka - resultsanuguṇa - similar qualitieseva - thusabhivyakti - manifestationvāsanā - latent impressions

Commentaries and Reflections

Paul Harvey:

Vāsanā is an unconscious motivation directed towards
satisfying a physiological or psychological need.”