Proverbs 26:5-7

International Standard Version

⁵ Answer a fool according to his foolishness,
    or he will think himself to be wise.
⁶ Whoever sends a message by the hand of a fool
    cuts off his own^[a] feet and drinks violence.
⁷ Useless legs to the lame—
    that’s what a proverb quoted by a fool is.