Leviticus 25:8-11

‘You are also to count off seven Sabbaths of years for yourself, seven times seven years, so that you have the time of the seven Sabbaths of years, namely, forty-nine years. Then you shall sound the ram’s horn everywhere on the tenth day of the seventh month (almost October); on the Day of Atonement you shall sound the trumpet throughout your land. And you shall consecrate the fiftieth year and proclaim freedom [for the slaves] throughout the land to all its inhabitants. It shall be a Jubilee (year of remission) for you, and each of you shall return to his own [ancestral] property [that was sold to another because of poverty], and each of you shall return to his family [from whom he was separated by bondage]. That fiftieth year shall be a Jubilee for you; you shall not sow [seed], nor reap what reseeds itself, nor gather the grapes of the uncultivated vines.