39. The _prána_ expiration forsakes its nature of the cooling moon, and turns in a moment to assume the nature of the hot sun, that dries and sucks up everything before it. 40. As long as the _prána_ exhalation is not converted to the nature of the moon, after forsaking its solarity, it is so long considered as unconditioned by time and place, and freed from pain and grief. (The _prána_ being peculiarised by time, place and number, is long or short and subject to misery; but its extinction in the interval, is instinct with the supreme spirit. Patanjali Yoga sutra II 50). 41. He who sees the seat of his soul in the mind situated within his heart, and at the confluence of the sol-luni _prána_ and _apána_ breathings in the Kumbhaka or retained breath, is no more subjected to be reborn and die. 41_a_. He who feels the sun and moon of his _prána_ and _apána_ breaths, ever rising and setting in the _kumbhaka_ or retained breath with his heart, verily sees the seat of his mind and soul placed at their confluence, and is freed from further birth and death. (The plain meaning is that, the mind and soul consist in the air deposited in the heart by the two inhaling and exhaling breaths of _prána_ and _apána_). 42. He verily sees the soul in its full light, who beholds this bright sun [Sanskrit: prána] shining in the sphere of his heart, in conjunction with the rising and setting moon beams _apána_ in his mind. 43. This light never fades nor grows faint at any time, but dispels the darkness of the heart, and produces the consummation--_Siddhi_ of the meditative mind. 44. As the dispersion of outward darkness presents the world to view, so the disappearance of inward obscurity gives out the light of the spirit before the mental sight. 45. The removal of intellectual darkness, produces the liberation of the soul, and shows the rising and setting sun of the vital breath vividly to view. 46. When the moon of the _apána_ or inspired breath, sets in the cavity of the heart, the sun of the _prána_ or expiratory breathing, rises immediately to gush out of the same. 47. The _apána_ or inhaling breath having set in the cell of the lotus like heart, the exhaling breath of _prána_ rises at the very moment to come out of it, as the shadow of the night being dispersed from sight, the bright sun of the day ushers his light. 48. As the _prána_ expiration expires in the open air, the inhaling breath rises and rushes in a moment; just as the light having fled from the horizon, is succeeded immediately by deep darkness. 49. Know ye intelligent men, that the _apána_ breath becomes extinct, where the _prána_ comes to be born; and the _prána_ respiration is lost, where the _apána_ takes its rise. 50. When the _prána_ breathing has ceased and the _apána_ has its rise, it is then that one supports himself upon the Kumbhaka retained air, and does not depend on two other passing breaths.