Deuteronomy 15:1-2 Deut. 15:1-2
1 At the end of every seven years thou shalt make a release. 2 And this is the manner of the release: Every creditor that lendeth ought unto his neighbour shall release it; he shall not exact it of his neighbour, or of his brother; because it is called the LORD'S release.
Deuteronomy 31:10 Deut. 31:10
And Moses commanded them, saying, At the end of every seven years, in the solemnity of the year of release, in the feast of tabernacles,
(Relation)