Leviticus 19:9-12

⁹When you harvest your grain, leave the grain at the very edge of the field, and do not pick up the grain that has fallen on the ground.

¹⁰And when you harvest your grapes, do not go back a second time to try to harvest some more, and do not pick up the grapes that have fallen on the ground. Leave those things for the poor people and for foreigners who are living among you. I, Yahweh your God, am commanding those things.

¹¹Do not steal anything. Do not tell lies. Do not deceive each other.

¹²Do not show that you do not respect me by using/saying my name to falsely promise that you will do something. Do not forget that I am Yahweh, your God.