Proverbs 26:5-7

New International Reader's Version

⁵ Answer a foolish person in keeping with their foolish acts.
    If you do not, they will be wise in their own eyes.

⁶ Sending a message in the hand of a foolish person
    is like cutting off your feet or drinking poison.

⁷ A proverb in the mouth of a foolish person
    is like disabled legs that are useless.