Numbers 6:21

6:21 “This is the law of the Nazirite who vows to the Lord his offering according to his separation, as well as whatever else he can provide. Thus he must fulfill his vow that he makes, according to the law of his separation.”

Numbers 9:14

9:14 If a resident foreigner lives among you and wants to keep the Passover to the Lord, he must do so according to the statute of the Passover, and according to its custom. You must have the same statute for the resident foreigner and for the one who was born in the land.’”