Verse 5.27-28

Verse 5.27: “Having kept aloof (all) external (sense-) contacts and directing the gaze betwixt the eyebrows, making the exhalation and the inhalation that move within nostrils, evenly balance one another.

Verse 5.28: With sense-centres, mind and intellect under control: the sage who-making salvation his goal rids himself of (all) desire, fear and anger: he verily is ever emancipated. (151)

Commentary called Jnaneshwari by Jnaneshwar:

They on the strength of their asceticism drive away from their body, all the sense-objects and make it (body) all full of the mind. In such a state, they turn and direct their gaze to the spot where the ends of the eyebrow meet together (between the eye-brows), restraining both the nostrils, they evenly balance and bring together the life breath Prana and Apana (ingoing and outgoing) and force them up along with the mind in the direction of Brahmarandhra (the aperture supposed to be at the crown of the head, through which the soul takes its flight on death). Just as the water-courses from the streets go and join the Ganges, which along with them flows into the sea, and then they cannot be distinguished, in the same way when in the state of wrapt concentration the mind mingles with the Brahmarandhra, being forced into it by the combined strength of the life breath of Prana and Apana, desires cease to exist. The linen in the form of the mind on which is drawn the picture of the mundane existence then gets torn and just as the reflections (in it) disappear with the drying up of a lake, in the same way when the mind itself ceases to exist, where then could exist self-conceit or sense of separate individual being? One who thus experiences the bliss of the absorption of oneness with Brahman becomes himself the very Being and Power of the Brahman, even though he be in a human form.