Lineage of Prajapati - Verse 165-166

At the beginning of a Manvantara as in the begi ning of the Treta Yuga, when Devas and men become sta rise in Dharma, they absolve themselves from the i e te mess o ^Lsis ( sages) by observing celibacy, to Pitrs try procereation an to the Devas by performance of sacrifices.