Hadith 29:181
Al-Hasan ibn Musa narrated to us, from Abu Hilal, from Qatadah, that Abu Bakr died while he was sixty-five years old. And that Umar was killed while he was fifty-one years old. And that Uthman was killed while he was eighty-nine or eighty-eight years old.
حدثنا الحسن بن موسى عن أبي هلال عن قتادة أن أبا بكر توفي وهو بن خمس وستين سنة وأن عمر قتل وهو بن إحدى وخمسين وأن عثمان قتل وهو بن تسع أو ثمان وثمانين