مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1525
Musnad Abu Ishaq Sa'd bin Abi Waqqas
It was narrated that Sa’d bin Abi Waqqas said: The Messenger of Allah (ﷺ) refused to let ‘Uthman be celibate. If he had allowed him, we would have gotten castrated.
Musnad Ahmad 1525Sahih (Darussalam) [ al-Bukhari (5073) and Muslim (1402)]