Leviticus 25:4

“Now you shall sow your land for six years and gather in its produce,

‘But if you say, “What are we going to eat on the seventh year if we do not sow or gather in our produce?”

to fulfill the word of Yahweh by the mouth of Jeremiah, until the land had made up for its sabbaths. All the days of its desolation it kept sabbath until seventy years were fulfilled.

As for the peoples of the land who bring wares or any grain on the sabbath day to sell, we will not receive from them on the sabbath or a holy day; and we will forego the crops the seventh year and the exaction of every debt.