Exodus 12:42-46

It is a night to be observed for the Lord, for having brought them out of the land of Egypt; this night is for the Lord, to be observed by all the sons of Israel throughout their generations.

And the Lord said to Moses and Aaron, “This is the ordinance of the Passover: no foreigner is to eat it;

but as for every slave that someone has purchased with money, after you have circumcised him, then he may eat it.

A stranger or a hired worker shall not eat it.

It is to be eaten in a single house; you are not to bring any of the meat outside of the house, nor are you to break any bone of it.