Mbh 13.63.3d

The water thus borne to the clouds is caused by Sakra to be poured upon the earth, O Bharata. The Sun, by means of his rays, sucks up the moisture of the earth. The deity of wind causes the moisture to fall down from the Sun.[333] When the water falls down from the clouds upon the Earth, the goddess Earth becomes moist, O Bharata. Then do people sow diverse kinds of crops upon whose outturn the universe of creatures depends. It is in the food thus produced that the flesh, fat, bones and vital seed of all beings have their origin. From the vital seed thus originated, O king, spring diverse kinds of living creatures. Agni and Soma, the two agents living within the body, create and maintain the vital seed. Thus from food, the Sun and the deity of wind and the vital seed spring and act. All these are said to constitute one element or quantity, and it is from these that all creatures spring. That man who gives food unto one who comes into his house and solicits it, is said, O chief of the Bharatas, to contribute both life and energy unto living creatures.'"