حَدَّثَنَا أَبُو مَرْوَانَ، مُحَمَّدُ بْنُ عُثْمَانَ الْعُثْمَانِيُّ حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ سَعْدٍ، قَالَ لَقَدْ رَدَّ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ عَلَى عُثْمَانَ بْنِ مَظْعُونٍ التَّبَتُّلَ وَلَوْ أَذِنَ لَهُ لاَخْتَصَيْنَا ‏.‏

It was narrated that: Sa'd said: “The Messenger of Allah disapproved of Uthman bin Maz'un's desire to remain celibate; if he had given him permission, we would have gotten ourselves castrated.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 9 Hadith 1848
Web Ref:  Sunan Ibn Majah Vol 3 Book 9 Hadith 1848