Deuteronomy 23:25
When you come into the standing grain of your neighbor, then you may pluck the heads with your hand, but you shall not move a sickle into your neighbor's standing grain.
Mark 2:23
And it happened that He went through the grainfields on the sabbath day. And as they walked His disciples began to pluck the heads of grain.
Matthew 12:1-2
At that time Jesus went through the grain fields on the sabbath day. And His disciples were hungry, and began to pluck the heads of grain and to eat.
Luke 6:1-2
And it happened on the second chief sabbath, He went through the grain fields. And His disciples plucked the heads of grain and ate, rubbing them in their hands.