Exodus 12:47

45A foreigner and a hired servant shall not eat of it.

46It must be eaten in one house. You shall not carry any of the meat outside of the house. Do not break any of its bones.

47All the congregation of Israel shall keep it.

48When a stranger lives as a foreigner with you, and would like to keep the Passover to the LORD, let all his males be circumcised, and then let him come near and keep it. He shall be as one who is born in the land; but no uncircumcised person shall eat of it.

49One law shall be to him who is born at home, and to the stranger who lives as a foreigner among you.”