Leviticus 25:5-8

⁵And you shall not gather the spontaneous produce of your field, and you shall not gather fully the grapes of your dedication: it shall be a year of rest to the land.

⁶And the sabbaths of the land shall be food for you, and for your man-servant, and for your maidservant, and your hireling, and the stranger that abides with you.

⁷And for your cattle, and for the wild beats that are in your land, shall every fruit of it be for food.

⁸And you shall reckon to yourself seven sabbaths of years, seven times seven years; and they shall be to you seven weeks of years, nine and forty years.