Leviticus 25:2-4

2Speak unto the children of Israel and say unto them, When ye come into the land that I will give you, the land shall celebrate a sabbath to Jehovah.

3Six years shalt thou sow thy field, and six years shalt thou prune thy vineyard, and gather in the produce thereof,

4but in the seventh year shall be a sabbath of rest for the land, a sabbath to Jehovah. Thy field shalt thou not sow, and thy vineyard shalt thou not prune.