Exodus 12:43

Now the time that the children of Israel lived in Egypt was four hundred thirty years.

At the end of four hundred thirty years, to the day, all of the LORD’s armies went out from the land of Egypt.

It is a night to be much observed to the LORD for bringing them out from the land of Egypt. This is that night of the LORD, to be much observed by all the children of Israel throughout their generations.

but every man’s servant who is bought for money, when you have circumcised him, then shall he eat of it.

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

It 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.