25 When thou comest into thy neighbor's standing grain, then thou mayest pluck the ears with thy hand; but thou shalt not move a sickle unto thy neighbor's standing grain.
Deuteronomy 23:25 Cross References - ASV
Matthew 12:1-2
Mark 2:23
23 And it came to pass, that he was going on the sabbath day through the grainfields; and his disciples began, as they went, to pluck the ears.