Mark 2:23
And it came to pass, that he went through the corn-fields on the sabbath; and his disciples began, as they went, to pluck the ears of corn.
Matthew 12:1-8
At that time Jesus went on the sabbath through the corn, and his disciples were hungry, and began to pluck the ears of corn, and to eat.
Luke 6:1-5
And it came to pass on the second sabbath after the first, that he went through corn-fields; and his disciples plucked the ears of corn, and ate, rubbing them in their hands.
Deuteronomy 23:24-25
When thou comest into thy neighbor's vineyard, then thou mayest satisfy thy appetite with grapes at thy own pleasure; but thou shalt not put any in thy vessel.