'Proverb' in the Bible

And He said to them, “No doubt you will quote this proverb to Me, ‘Physician, heal yourself! Whatever we heard was done at Capernaum, do here in your hometown as well.’”

It has happened to them according to the true proverb, “A dog returns to its own vomit,” and, “A sow, after washing, returns to wallowing in the mire.”