שֶׁ֣מֶן וּ֭קְטֹרֶת יְשַׂמַּֽח־לֵ֑ב וּמֶ֥תֶק רֵ֝עֵ֗הוּ מֵֽעֲצַת־נָֽפֶשׁ׃
Ointment and perfume rejoice the heart; So doth the sweetness of a man’s friend by hearty counsel.
Read halakhic rulings (Jewish law) on Proverbs 27:9: and classical halakhic sources.