Numbers 15:14-15

14If an alien sojourns with you, or one who may be among you throughout your generations, and he wishes to make an offering by fire, as a soothing aroma to the Lord, just as you do so he shall do.

15As for the assembly, there shall be 1one statute for you and for the alien who sojourns with you, a perpetual statute throughout your generations; as you are, so shall the alien be before the Lord.