One verse

Srimad Bhagavatam 7.12.25

7.12.25

खे खानि वायौ निश्वासांस्तेज:सूष्माणमात्मवान् । अप्स्वसृक्‍श्लेष्मपूयानि क्षितौ शेषं यथोद्भ‍वम् ॥ २५ ॥

khe khani vayau nisvasams tejahsusmanam atmavan apsv asrk-slesma-puyani ksitau sesam yathodbhavam

khe
in the sky
khani
all the holes of the body
vayau
in the air
nisvasan
all the different airs moving within the body (prana, apana, etc.)
tejahsu
in fire
usmanam
the heat of the body
atma-van
a person who knows the self
apsu
in water
asrk
blood
slesma
mucus
puyani
and urine
ksitau
in the earth
sesam
the remaining (namely skin, bones and the other hard things in the body)
yatha-udbhavam
wherefrom all of them grew

A sober, self-realized person who has full knowledge should merge the various parts of the body in their original sources. The holes in the body are caused by the sky, the process of breathing is caused by the air, the heat of the body is caused by fire, and semen, blood and mucus are caused by water. The hard substances, like skin, muscle and bone, are caused by earth. In this way all the constituents of the body are caused by various elements, and they should be merged again into those elements.