Allowing Neighbors to Eat Grain
THE FARMER'S LAW OF HOSPITALITY
Eating grain in the field. When the grain in the wheatfield has passed the "milk-stage," and has begun to harden, it is then called "fereek" and is considered to be delicious to eat raw. Natives of the land will pluck the heads, and then rub them in their hand and eat them. For centuries the unwritten law of hospitality has been that wayfarers may eat of the wheat as they pass by or through a field, but they must not carry any away with them.29
The law of GOD allowed this same privilege. "When thou comest unto the standing corn (i.e. grain) of thy neighbor, then thou mayest pluck the ears with thine hand; but thou shalt not move a sickle unto thy neighbor's standing corn" (Deuteronomy 23:25). When the Pharisees criticized the disciples, it was not for eating wheat as they passed through a wheat field, but rather for doing it on the sabbath day (Luke 6:1,2).
[Manners And Customs of Bible Lands]