הִנֵּה֙ כָּל־הַמֹּשֵׁ֔ל עָלַ֥יִךְ יִמְשֹׁ֖ל לֵאמֹ֑ר כְּאִמָּ֖ה בִּתָּֽהּ׃
看哪，凡說俗語的，必用這俗語來說你：『有其母，必有其女。』
Rashi
whoever uses proverbs Heb. הַמֹשֵּׁל. This is an expression of a proverb and a riddle
Rashi
“Like mother, like daughter” Heb. כְּאִמָה בִּתָּה. The ‘hey’ of כְּאִמָה is not a ‘mappiq [aspirate] hey,’ [to read her mother; i.e. it is not the third person possessive] because it does not serve for any noun but it means, as the mother, so is her daughter.