Honor your father and your mother, as Hashem your God commanded you, so that your days may be long and so that it may go well with you on the land that Hashem your God is giving you.
English: It was taught: The commandment of honoring father and mother was given to Israel at Marah, as it is written concerning it “as Hashem your God commanded you,” and Rav Yehudah said in the name of Rav: “as He commanded you” — at Marah.
On the daf / in context: The phrase “ka’asher tzivcha” that appears in the second set of the Dibros is taken as a reference to the earlier revelation of this mitzvah at Marah.
Type of Learning
Diyuk of “ka’asher tzivcha” as pointing back to the command given at Marah.
What Is Learned
Honoring parents was already obligatory from Marah; the Dibros restate a prior commandment.