מְק֣וֹר חַ֭יִּים פִּ֣י צַדִּ֑יק וּפִ֥י רְ֝שָׁעִ֗ים יְכַסֶּ֥ה חָמָֽס׃
의인의 입은 생명의 샘이라도 악인의 입은 독을 머금었느니라
Rashi
ואנשי סדום רעים BUT THE MEN OF SODOM WERE WICKED, and yet Lot did not refrain from living with them. Our Rabbis learned from here how the text (Proverbs 10:11) “and the name of the wicked shall rot” should be applied (Yoma 38b).