Proselytes: Required: To be Circumcised
Source: TTT
Genesis 17:13
Whether they are born in your household or purchased, they must be circumcised. My covenant in your flesh will be an everlasting covenant.
Exodus 12:48
If a foreigner resides with you and wants to celebrate the LORD’s Passover, all the males in the household must be circumcised; then he may come near to celebrate it, and he shall be like a native of the land. But no uncircumcised man may eat of it.