'Year of Release' in the Bible

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

And Moses commanded them, saying: At the end of seven years, at the set time of the year of release, in the Feast of Tabernacles,