Genesis 17:13
He who is born in your house, and he who is bought with your money, must be circumcised. My covenant shall be in your flesh for an everlasting covenant.
World English Bible (Public Domain)
In context
Before · Genesis 17:11–12
11You shall be circumcised in the flesh of your foreskin. It will be a token of the covenant between me and you. 12He who is eight days old shall be circumcised among you, every male throughout your generations, he who is born in the house, or bought with money from any foreigner who is not of your offspring.
13He who is born in your house, and he who is bought with your money, must be circumcised. My covenant shall be in your flesh for an everlasting covenant.