Exodus 12:44

But every man’s servant that is bought for money, when thou hast circumcised him, then shall he eat thereof.

Cross-reference

Genesis 17:12 commands circumcision for bought slaves — the requirement applied in Exodus 12:44 to allow them to eat Passover.

Genesis 17:13 reiterates that bought slaves must be circumcised — the covenant basis for Exodus 12:44's Passover provision.

Genesis 17:23 records Abraham circumcising his bought slaves — the historical precedent for the practice in Exodus 12:44.

Leviticus 25:44 permits buying foreign slaves — the same category of slaves allowed to eat Passover after circumcision in Exodus 12:44.