Proverbs 20:15-17

New International Version - UK

¹⁵ Gold there is, and rubies in abundance,
    but lips that speak knowledge are a rare jewel.

¹⁶ Take the garment of one who puts up security for a stranger;
    hold it in pledge if it is done for an outsider.

¹⁷ Food gained by fraud tastes sweet,
    but one ends up with a mouth full of gravel.