Exodus 23:11 But the seventh year you shall let it rest and lie still; that the poor of your people may eat: and what they leave the beasts of the field shall eat. In like manner you shall deal with your vineyard, and with your olive grove. Torrey's Topical Textbook
Leviticus 25:4 But in the seventh year shall be a sabbath of rest to the land, a sabbath for the LORD: you shall neither sow your field, nor prune your vineyard. Torrey's Topical Textbook