Leviticus 18:1-2, 19:9-10 - And the Lord spoke to Moses, saying, “Speak to the people of Israel and say to them, I am the Lord your God.” … “When you reap the harvest of your land, you shall not reap your field right up to its edge, neither shall you gather the gleanings after your harvest. And you shall not strip your vineyard bare, neither shall you gather the fallen grapes of your vineyard. You shall leave them for the poor and for the sojourner: I am the Lord your God.”