English: Rav Nachman bar Yitzchak said: Whoever places his bed between north and south — his wife will not miscarry… It is written here “and Your hidden ones You fill their belly” and it is written there “and her days were filled to give birth.”
On the daf / in context: The phrase “her days were filled” is linked to the practice of orienting the marital bed north–south, associated with successful full-term pregnancy.
Type of Learning
Custom (Bavli — bed orientation and full-term birth)
What Is Learned
Orienting the marital bed between north and south is associated with a full-term pregnancy; the verse “her days were filled to give birth” supplies the verbal link.