khe khāni vāyau niśvāsāṁs
tejaḥsūṣmāṇam ātmavān
apsv asṛk-śleṣma-pūyāni
kṣitau śeṣaṁ yathodbhavam
khe - in the sky; khāni - all the holes of the body; vāyau - in the air; niśvāsān - all the different airs moving within the body (prāṇa, apāna, etc.); tejaḥsu - in fire; uṣmāṇam - the heat of the body; ātma-vān - a person who knows the self; apsu - in water; asṛk - blood; śleṣma - mucus; pūyāni - and urine; kṣitau - in the earth; śeṣam - the remaining (namely skin, bones and the other hard things in the body); yathā-udbhavam - wherefrom all of them grew.
To be self-realized, one must understand the original sources of the various elements of the body. The body is a combination of skin, bone, muscle, blood, semen, urine, stool, heat, breath and so on, which all come from earth, water, fire, air and sky. One must be well conversant with the sources of all the bodily constituents. Then one becomes a self-realized person, or ātmavān, one who knows the self.