Deuteronomy 15:1-3 At the end of every seven years you shall make a release. Torrey's Topical Textbook
Nehemiah 10:31 And if the people of the land bring ware or any victuals on the sabbath day to sell, that we would not buy it of them on the sabbath, or on the holy day: and that we would leave the seventh year, and the exaction of every debt. Torrey's Topical Textbook