Manvantaras : The Milking of the Earth - Verse 175-176

The Earth (The holder of treasures) was eulogised by the sages and milked again. Their calf was Soma (the Moon) and the milker (milkman) was Bfhaspati. The vessel was Gayatri and other (Vedic) metres. Their milk was penance and the eternal Brahman.