שְׁמַ֣ע בְּ֭נִי מוּסַ֣ר אָבִ֑יךָ וְאַל־תִּ֝טֹּ֗שׁ תּוֹרַ֥ת אִמֶּֽךָ׃
הער צו, מײַן זון, דעם מוסר פֿון דײַן פֿאָטער, און זאָלסט ניט פֿאַרלאָזן די לער פֿון דײַן מוטער;
Rashi
Hearken, my son, to the discipline of your father What the Holy One, blessed be He, gave Moses in writing and orally.
Rashi
your mother Heb. אמך [like אמתך], your nation, the nation of Israel, as in (Ezek. 19:2): “What a lioness was your mother [meaning your nation]!” These are the words of the Scribes, which they innovated and added and made safeguards for the Torah.