(4) باب النَّهْىِ عَنِ التَّبَتُّلِ، .
Narrated Sa'd bin Abi Waqqas:
It was narrated that Sa'd bin Abi Waqqas said: "The Messenger of Allah forbade 'Uthman to be celibate. If he had given him permission we would have castrated ourselves."
Reference: Sunan an-Nasa'i 3212
In-book reference: Book 26, Hadith 17
English translation: Vol. 4, Book 26, Hadith 3214