גַּ֤ם לְכָל־הַדְּבָרִים֙ אֲשֶׁ֣ר יְדַבֵּ֔רוּ אַל־תִּתֵּ֖ן לִבֶּ֑ךָ אֲשֶׁ֥ר לֹֽא־תִשְׁמַ֥ע אֶֽת־עַבְדְּךָ֖ מְקַלְלֶֽךָ׃
Also take not heed unto all words that are spoken, lest thou hear thy servant curse thee;
Read halakhic rulings (Jewish law) on Ecclesiastes 7:21: and classical halakhic sources.