Quoting_commentary for Proverbs 25:9

רִֽ֭יבְךָ רִ֣יב אֶת־רֵעֶ֑ךָ וְס֖וֹד אַחֵ֣ר אַל־תְּגָֽל׃

Debate thy cause with thy neighbour, but reveal not the secret of another;