Musnad AhmadChapter 4Hadith 515
Full Sharh — Musnad Ahmad 515
حَدَّثَنَا حَسَنُ بْنُ مُوسَى، حَدَّثَنَا أَبُو هِلَالٍ، حَدَّثَنَا قَتَادَةُ، أَنَّ عُثْمَانَ، قُتِلَ وَهُوَ ابْنُ تِسْعِينَ سَنَةً أَوْ ثَمَانٍ وَثَمَانِينَ.
English Translation
Qatadah narrated that `Uthman (رضي الله عنه) was killed when he was ninety years old or eighty-eight years old.
Source
Musnad Ahmad(مسند أحمد)
Musnad Uthman ibn Affan
Hadith Number
515