English of Core Text: It was taught: Rabbi Eliezer the Great says: “These are the generations of the heaven and the earth” — the generations of the heaven were created from the heaven; the generations of the earth were created from the earth.
On the daf / in context: In the discussion of the foundation stone / navel of the world, this baraita distinguishes the origin of heavenly versus earthly creatures.
Type of Learning: Custom (origin of heavenly vs. earthly creatures)What Is Learned: Heavenly beings derive from heaven; earthly beings derive from earth.