מֵ֭רַע מַקְשִׁ֣יב עַל־שְׂפַת־אָ֑וֶן שֶׁ֥קֶר מֵ֝זִין עַל־לְשׁ֥וֹן הַוֺּֽת׃
A evil-doer giveth heed to wicked lips; And a liar giveth ear to a mischievous tongue.
Rashi on Proverbs
hearkens to a language of violence and lies He accepts slander and false testimony.
Rashi on Proverbs
lends an ear Heb. מזין like מאזין He who lies lends an ear to destructive speech.