Parallel
Proverbs 27:22
Westminster Leningrad Codex · Berean Standard Bible
אִ֥ם תִּכְתּֽוֹשׁ־ אֶת־ הָאֱוִ֨יל׀ בַּֽמַּכְתֵּ֡שׁ בְּת֣וֹךְ הָ֭רִיפוֹת בַּֽעֱלִ֑י לֹא־ תָס֥וּר מֵ֝עָלָ֗יו אִוַּלְתּֽוֹ׃פ
Though you grind a fool like grain with mortar and a pestle, yet his folly will not depart from him.