Leviticus 23:22-25

²²And when ye reap the harvest of your land, thou shalt not make clean riddance of the corners of thy field when thou reapest, neither shalt thou gather any gleaning of thy harvest: thou shalt leave them unto the poor, and to the stranger: I am the LORD your God.

²³And the LORD spake unto Moses, saying,

²⁴Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.

²⁵Ye shall do no servile work therein: but ye shall offer an offering made by fire unto the LORD.