Leviticus 25:4-5

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.

5That which springeth up from the scattered seed of thy harvest thou shalt not reap, and the grapes of thine undressed vines thou shalt not gather: a year of rest shall it be for the land.