Leviticus 22:11

But a priest, if [with] his money he buys a person [as] {his possession}, that one may eat it, and the descendants of his house themselves may eat his food.

Genesis 17:13

{You must certainly circumcise} {the servant born in your house and the one bought from any foreigner}. And my covenant shall be with your flesh as an everlasting covenant.

Exodus 12:44

But any slave of a man, an acquisition by money, and you have circumcised him, then he may eat it.

Numbers 18:11-13

This [is also] for you: the contribution of their gift of the wave offerings of the children Israel. I have given them to you and your sons and your daughters with you as an eternal decree; whoever [is] clean in your house may eat it.

Treasury of Scripture Knowledge

Summary

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.

Bible References

His money

Genesis 17:13
{You must certainly circumcise} {the servant born in your house and the one bought from any foreigner}. And my covenant shall be with your flesh as an everlasting covenant.
Numbers 18:11
This [is also] for you: the contribution of their gift of the wave offerings of the children Israel. I have given them to you and your sons and your daughters with you as an eternal decree; whoever [is] clean in your house may eat it.