אַל־תַּ֣עַן כְּ֭סִיל כְּאִוַּלְתּ֑וֹ פֶּֽן־תִּשְׁוֶה־לּ֥וֹ גַם־אָֽתָּה׃
Answer not a fool according to his folly, Lest thou also be like unto him.
Rashi on Proverbs
Do not answer a fool with words of quarrel and contention lest you become like him.
אַל־תַּ֣עַן כְּ֭סִיל כְּאִוַּלְתּ֑וֹ פֶּֽן־תִּשְׁוֶה־לּ֥וֹ גַם־אָֽתָּה׃
Answer not a fool according to his folly, Lest thou also be like unto him.