Leviticus 19:33-37
When a stranger resides with you in your land, you shall not wrong him. The stranger who resides with you shall be to you as one of your citizens; you shall love him as yourself, for you were strangers in the land of Egypt: I the Lord am your God.
You shall not falsify measures of length, weight, or capacity. You shall have an honest balance, honest weights, an honest ephah, and an honest hin.
I the Lord am your God who freed you from the land of Egypt. You shall faithfully observe all My laws and all My rules: I am the Lord.