Leviticus 25:2-4

2The Lord said, ‘Speak to Israel's people. They will go into the land that I will give to them. Then the land must have a Sabbath rest to the Lord.

3They can plant seeds in the fields for six years. They can cut the leaves of the plants and they can harvest the fruit for six years.

4In the seventh year, the land must have a rest. They must not plant seeds in the fields or cut the leaves.