Mark 2:23
Jesus happened to be going through the grain fields on a Sabbath. As they made their way, his disciples began picking the heads of grain.
Matthew 12:1-8
At that time, Jesus walked through the grain fields on a Sabbath. His disciples became hungry and began picking heads of grain to eat.
Luke 6:1-5
One time Jesus was walking through some grain fields on a Sabbath. His disciples were picking the heads of grain, rubbing them in their hands, and eating them.
Deuteronomy 23:24-25
"When you enter your countrymen's vineyard, you may eat the grapes to your satisfaction, but don't take any in a basket.