עֲנֵ֣ה כְ֭סִיל כְּאִוַּלְתּ֑וֹ פֶּן־יִהְיֶ֖ה חָכָ֣ם בְּעֵינָֽיו׃
Odpowiedz błaznowi wedle głupoty jego, aby się nie uważał za mędrca w własnych oczach.
Rashi on Proverbs
Answer a fool who comes to win you over to idolatry; let him know his folly.
Rashi on Proverbs
lest he be wise in his sight The meaning of these two verses is explained in [the verses] themselves: Do not answer in a matter in which you will become like him if you answer him. Answer a fool in a matter in which he will be wise in his sight if you do not answer him.