Deuteronomy 23:23-25

New Revised Standard Version Catholic Edition

²³ Whatever your lips utter you must diligently perform, just as you have freely vowed to the Lord your God with your own mouth.

²⁴ If you go into your neighbor’s vineyard, you may eat your fill of grapes, as many as you wish, but you shall not put any in a container.

²⁵ If you go into your neighbor’s standing grain, you may pluck the ears with your hand, but you shall not put a sickle to your neighbor’s standing grain.