Leviticus 19:9-11

⁹And when ye reap the harvest of your land, thou shalt not wholly reap the corners of thy field, neither shalt thou gather the gleanings of thy harvest.

¹⁰And thou shalt not glean thy vineyard, neither shalt thou gather every grape of thy vineyard; thou shalt leave them for the poor and stranger: I am the Lord your God.

¹¹Ye shall not steal, neither deal falsely, neither lie one to another.