Proverbs 26:2-5

²As the bird cometh to flit away, as the swallow, to fly off: so will an undeserved curse not come to fulfillment.

³A whip is for the horse, a bridle for the ass, and a rod for the fool's back.

⁴Do not answer a fool according to his folly, lest thou also become equal unto him.

⁵Answer a fool according to his folly, lest he be wise in his own eyes.