Exodus 12:48-49

48But 1if a stranger resides with you and 2celebrates the Passover to the Lord, all of his males are to be circumcised, and then he shall come near to 3celebrate it; and he shall be like a native of the land. But no uncircumcised male may eat it. 4945The same law shall 6apply to the native as to the stranger who resides among you.”