'Year of Release' in the Bible

Beware that there not be a base thought in your heart, saying, "The seventh year, the year of release, is at hand"; and your eye be evil against your poor brother, and you give him nothing; and he cry to the LORD against you, and it be sin to you.

Moses commanded them, saying, "At the end of every seven years, in the set time of the year of release, in the feast of tents,