TT #55 · Parashas Noach · Fourth Aliyah · Passuk 9:7
And you, be fruitful and multiply; swarm on the earth and multiply on it.
Torah Temimah treats the renewed command of pru u-revu after the Flood.
English: “And you, be fruitful and multiply” — a renewed emphasis on the commandment of procreation after the Flood.
Custom
The command to populate the earth is restated with force after the near-extinction of the Flood.