Leviticus 25:20-22

And if ye shall say, What shall we eat the seventh year? behold, we shall not sow, nor gather in our increase:

Then I will command my blessing upon you in the sixth year, and it shall bring forth fruit for three years.

And ye shall sow the eighth year, and eat [yet] of old fruit until the ninth year; until her fruits come in ye shall eat [of] the old [store].