Proverbs 26:2-4

New International Version

² Like a fluttering sparrow or a darting swallow,
    an undeserved curse does not come to rest.^(A)
3 A whip for the horse, a bridle for the donkey,^(B)
    and a rod for the backs of fools!^(C)
4 Do not answer a fool according to his folly,
    or you yourself will be just like him.^(D)