29. I know, O Brahman! the exhaling breath, to rise from its source of the lotus like heart, and stretch to the distance of twelve inches out of it, where it sets or stops. (As is mixed up with the current air).
30. The apána or inhaling breath is taking in from the same distance of twelve inches, and is deposited in the cup of the lotus situated in the human heart.
31. As the prána respiration is exhaled out in the air, to the distance of twelve inches from the heart, so the inhaled air of apána is taken into the breast, from the same distance of the open sky.
32. The prána or exhaling breath runs towards the open air, in the form of a flame of fire, and the inhaled breath turns inward to the region of the heart, and goes downward like a current of water.
33. The apána or inhaled breath is like the cooling moon light, and refreshes the body from without; while prána respiration resembling the sunshine or a flame of fire, warms the inside of the body.
34. The prána breath warms every moment the region of the heart, as the sunshine inflames the region of the sky; and then it torrifies the atmosphere before it, by the exhalation of breath through the mouth.
35. The apána air is as the moonlight before the moon, and being inhaled inward, it washes the sphere of the heart as by a deluge; then it refreshes the whole inside in a moment.
36. When the last digit of the moon-like apána or inhaling breath, is swallowed by the sun of the prána or exhaling breath; it meets with the sight of supreme spirit, and has no more any cause of affliction.
37. So also when the last portion of the sunlike prána or exhaling breath, is swallowed by the moon-like apána or inhaling breath; then there ensues the same visitation of Brahmá in the inside, and the soul is emancipated from further transmigration in this world. (The meeting of the two is a yoga or junction of the human and Divine spirits).
38. The prána or exhaling breath assumes the nature of the solar heat, both in the inside and outside of the body; and afterwards it becomes and remains as the cooling moonlight. (It is the one and same breath of air, that takes the two names, according to its two different natures of inspiration and expiration. gloss).