Numbers 15:14-15

14Now if a stranger resides among you, or one who may be among you throughout your generations, and he wants to make an offering by fire, as a soothing aroma to the Lord, just as you do so shall he do.

15As for the assembly, there shall be 1one statute for you and for the stranger who resides among you, a permanent statute throughout your generations; as you are, so shall the stranger be before the Lord.