Ecclesiastes 7:21
"Also take no heed unto all words that are spoken; lest thou hear thy servant curse thee:"
Cross References (ranked by relevance)
Accuse not a servant unto his master, lest he curse thee, and thou be found guilty.
That make a man an offender for a word, and lay a snare for him that reproveth in the gate, and turn aside the just for a thing of nought.
And the king said, What have I to do with you, ye sons of Zeruiah? so let him curse, because the LORD hath said unto him, Curse David. Who shall then say, Wherefore hast thou done so?
And said unto the king, Let not my lord impute iniquity unto me, neither do thou remember that which thy servant did perversely the day that my lord the king went out of Jerusalem, that the king should take it to his heart.