Leviticus 25:2-4

2“Give the following instructions to the people of Israel. When you have entered the land I am giving you, the land itself must observe a Sabbath rest before the Lord every seventh year.

3For six years you may plant your fields and prune your vineyards and harvest your crops,

4but during the seventh year the land must have a Sabbath year of complete rest. It is the Lord’s Sabbath. Do not plant your fields or prune your vineyards during that year.