English: “You and your sons and your wife” — whereas regarding the exit it is written “Go out from the ark, you and your wife and your sons” — R’ Yochanan said: This teaches that upon their entry they were forbidden marital relations.
On the daf / in context: The change in word order (males listed together, then females, versus the mixed order at exit) is the textual basis for the temporary prohibition of marital relations during the Flood year. The world was in a state of destruction; procreation was suspended until the covenant of survival was re-established.
Type of Learning
Custom (diyuk from the differing sequence of names at entry versus exit).
What Is Learned
While the ark was closed during the Flood, marital relations were forbidden; they were permitted again only upon exit.