When you enter your neighbor’s grainfield, you may pluck the heads of grain with your hand, but you must not put a sickle to your neighbor’s grain.
Jewish Publication Society of America Version (JPS1917) - Deuteronomy 23:25 >(23-26) When thou comest into thy neighbour's standing corn, then thou mayest pluck ears with thy hand; but thou shalt not move a sickle unto thy neighbour's standing corn.