Leviticus 25:4, 5, 20-22
Leviticus 25:4 NIV
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.
Leviticus 25:5 NIV
Do not reap what grows of itself or harvest the grapes of your untended vines. The land is to have a year of rest.