Musnad Ahmad #515
Musnad Uthman ibn Affan
Qatadah narrated that `Uthman (رضي الله عنه) was killed when he was ninety years old or eighty-eight years old.
About Musnad Ahmad
This hadith is #515 from Musnad Ahmad, in the Book of Musnad Uthman ibn Affan. Musnad Ahmad contains 1,374 hadiths across 8 books.