SB 3.7.25
prajapatinam sa patis
caklpe kan prajapatin
sargams caivanusargams ca
manun manvantaradhipan
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O learned brahmana, please describe how the leader of all the demigods, namely the Prajapati, Brahma, decided to establish the various Manus, the heads of the ages. Please describe the Manus also, and please describe the descendants of those Manus.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The human race, or manusya-sara, descends from the Manus, sons and grandsons of the Prajapati, Brahma. The descendants of Manu reside in all the different planets and rule all the universe.