Deuteronomy 23:25
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.
Mark 2:23
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.
Matthew 12:1-2
At that season Jesus went on the sabbath day through the grainfields; and his disciples were hungry and began to pluck ears and to eat.
Luke 6:1-2
Now it came to pass on a sabbath, that he was going through the grainfields; and his disciples plucked the ears, and did eat, rubbing them in their hands.