The Feast of Sabbatical Year: Enactments Respecting: Cessation of all Field Labour

But in the seventh year there shall be a Sabbath of complete rest for the land—a Sabbath to the LORD. You are not to sow your field or prune your vineyard.

You are not to reap the aftergrowth of your harvest or gather the grapes of your untended vines. The land must have a year of complete rest.