Cross reference
Deuteronomy 23:25
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
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
1 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.
2 But the Pharisees, when they saw it, said unto him, Behold, thy disciples do that which it is not lawful to do upon the sabbath.
Luke 6:1-2
1 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.
2 But certain of the Pharisees said, Why do ye that which it is not lawful to do on the sabbath day?