For six years sow your fields, and for six years prune your vineyards and gather their crops. But in the seventh year the land is to have a year of sabbath rest, a sabbath to the Lord. Do not sow your fields or prune your vineyards. Do not reap what grows of itself or harvest the grapes of your untended vines. The land is to have a year of rest. Whatever the land yields during the sabbath year will be food for you—for yourself, your male and female servants, and the hired worker and temporary resident who live among you,
Leviticus 25:3-6