Leviticus 25:6

And the Sabbath of the land shall be meat for you; for thee and for thy servant and for thy maid, both male and female slaves being named, and for thy hired servant, and for thy stranger that sojourneth with thee. So all the volunteer grain and the volunteer fruit was not to be harvested, but was to be eaten out of the field, as the need for food arose, this rule applying not only to men, but also to animals, both domestic and wild;