Exodus 23:10-13 New Revised Standard Version (NRSV)
Sabbatical Year and Sabbath
10 For six years you shall sow your land and gather in its yield; 11 but the seventh year you shall let it rest and lie fallow, so that the poor of your people may eat; and what they leave the wild animals may eat. You shall do the same with your vineyard, and with your olive orchard.
12 Six days you shall do your work, but on the seventh day you shall rest, so that your ox and your donkey may have relief, and your homeborn slave and the resident alien may be refreshed. 13 Be attentive to all that I have said to you. Do not invoke the names of other gods; do not let them be heard on your lips.