581 – Abū Khaythama narrated to us; the chain continues through Yaḥyā ibn Saʿīd, from Ibn ʿAjlān, who said: I heard my father relate—on the authority of Abū Hurayrah—from the Prophet ﷺ, who said: “Abraham was circumcised, and he underwent circumcision after he had reached eighty years of age.”