Charles Ellicott Commentary Leviticus 22:11

"But if a priest buy any soul, the purchase of his money, he shall eat of it; and such as are born in his house, they shall eat of his bread." — Leviticus 22:11 (ASV)

But if the priest buy any soul. —The case, however, was different with heathen slaves whom the priest purchased. These were admitted into the Jewish community by the rite of circumcision; they were allowed to partake of the paschal lamb and of every privilege of the Israelites. Therefore, they became incorporated into the priestly family and were allowed to eat of the holy things. During the second Temple, this privilege was extended to that kind of domestic whom the priest did not actually acquire by his own purchase-money, but whom the wife brought with her as part of her dowry, as well as to those whom the slaves of the priestly family purchased.

Born in his house. —That is, the house-born servant or the child of the slave. (See Genesis 17:12-13.) Even when the priest himself could not eat of the holy things because he had contracted some legal defilement, his wife, children, and slaves were permitted to partake of the sacrificial repast.