Bereshis 17:24-26

Orthodox Jewish Bible

²⁴ And Avraham was ninety shanah and nine, when he was circumcised in the basar of his arelah.

²⁵ And Yishmael bno was thirteen shanah, when he was circumcised in the basar of his arelah (foreskin).

²⁶ In the very same day was Avraham circumcised, and Yishmael bno.