Exodus 12:43-47

And the LORD said to Moses and Aaron, “This is the ordinance of the Passover: No foreigner shall eat it. But every man’s servant who is bought for money, when you have circumcised him, then he may eat it. A sojourner and a hired servant shall not eat it. In one house it shall be eaten; you shall not carry any of the flesh outside the house, nor shall you break one of its bones. All the congregation of Israel shall keep it.