Exodus 12:44

New Revised Standard Version Updated Edition 2021

but any slave who has been purchased may eat of it after he has been circumcised;

Cross References

Genesis 17:23

Then Abraham took his son Ishmael and all the slaves born in his house or bought with his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskins that very day, as God had said to him.

Leviticus 22:11

but if a priest acquires anyone by purchase, the person may eat of them, and those who are born in his house may eat of his food.