Patanjali Statue In Patanjali Yog Peeth, Haridwar

Patanjali‘s Yoga Sutra chapter 2, sutras 46-49

Yoga pose is a steady and comfortable position.

Yoga pose is mastered by relaxation of effort, to create a lessening of the natural tendency for restlessness, and identification of oneself as living within the infinite stream of life.

From that perfection of yoga posture, duality, such as praise and criticism, ceases to be a disturbance. When this is acquired then naturally follows a cessation of the movements of inspiration and expiration; this is called regulation of breath.