רִֽ֭יבְךָ רִ֣יב אֶת־רֵעֶ֑ךָ וְס֖וֹד אַחֵ֣ר אַל־תְּגָֽל׃
你與鄰舍爭訟，只爭你自己的事，不可洩漏別人的祕密；
Rashi
Have your quarrel with your friend But if, perforce, you must quarrel and debate with your friend, in any event, do not divulge another’s secret Do not mention to him the disgrace of his ancestors, which not everyone knows, and you are revealing it.