Exodus

And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which is not of thy seed.

He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.

If thou buy an Hebrew servant, six years he shall serve: and in the seventh he shall go out free for nothing.

And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham’s house; and circumcised the flesh of their foreskin in the selfsame day, as God had said unto him.

But if the priest buy any soul with his money, he shall eat of it, and he that is born in his house: they shall eat of his meat.