Bhagavad Gita · Chapter 5: Renunciation in Action

Bhagavad Gita 5.27

sparśānkṛtvā bahirbāhyāṃścakṣuścaivāntare bhruvoḥ | prāṇāpānau samau kṛtvā nāsābhyantaracāriṇau ||

Shutting out external contacts, fixing the gaze between the eyebrows, and making even the inward and outward breaths that move through the nostrils,

Modern context

For the first time the Gita gives concrete instructions for meditation, and chapter 6 will develop them. There are three steps. Leave outside what is outside, which means ceasing to follow sounds and sensations. Rest the gaze steadily at the point between the eyebrows, so that the eyes stop roaming. Let the breath in and the breath out become even. The body and breath are settled first, because a restless body and ragged breathing keep the mind restless.