Exodus 23:10-12

10And six years thou shalt sow thy land, and gather in its produce;

11but in the seventh thou shalt let it rest and lie [fallow], that the poor of thy people may eat [of it]; and what they leave, the beasts of the field shall eat. In like manner thou shalt deal with thy vineyard, and with thine olive-tree.

12— Six days thou shalt do thy work, but on the seventh day thou shalt rest; that thine ox and thine ass may rest, and the son of thy handmaid, and the stranger may be refreshed.