Allah's Messenger (ﷺ) said "The Prophet) Abraham circumcised himself after he had passed the age of eighty years and he circumcised himself with an adze."
Reference: Sahih al-Bukhari 6298 In-book : Book 79, Hadith 70 USC-MSA web (English) : Vol. 8, Book 74, Hadith 313 (deprecated)
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