Leviticus 25:20-22

25:20 If you say, ‘What will we eat in the seventh year if we do not sow and gather our produce?’ 25:21 I will command my blessing for you in the sixth year so that it may yield the produce for three years, 25:22 and you may sow the eighth year and eat from that sixth year’s produce – old produce. Until you bring in the ninth year’s produce, you may eat old produce.