SB 8.14.3
yajñadayo yah kathitah
paurusyas tanavo nrpa
manv-adayo jagad-yatram
nayanty abhih pracoditah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O King, I have already described to you various incarnations of the Lord, such as Yajña. The Manus and others are chosen by these incarnations, under whose direction they conduct the universal affairs.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The Manus execute the orders of the Supreme Personality of Godhead in His various incarnations.