Proverbs 16:27 Halakhah

אִ֣ישׁ בְּ֭לִיַּעַל כֹּרֶ֣ה רָעָ֑ה וְעַל־שפתיו [שְׂ֝פָת֗וֹ] כְּאֵ֣שׁ צָרָֽבֶת׃

An ungodly man diggeth up evil, And in his lips there is as a burning fire.

Read halakhic rulings (Jewish law) on Proverbs 16:27: and classical halakhic sources.