Exodus 12:42-49
English Standard Version
43And the Lord said to Moses and Aaron, "This is the statute of the Passover: no foreigner shall eat of it,
44but every slave that is bought for money may eat of it after you have circumcised him.
45No foreigner or hired worker may eat of it.
46It shall be eaten in one house; you shall not take any of the flesh outside the house, and you shall not break any of its bones.
47All the congregation of Israel shall keep it.
48If a stranger shall sojourn with you and would keep the Passover to the Lord, let all his males be circumcised. Then he may come near and keep it; he shall be as a native of the land. But no uncircumcised person shall eat of it.
49There shall be one law for the native and for the stranger who sojourns among you."