Sunan Ibn Majah 1848
سنن ابن ماجه#1848Sahihحَدَّثَنَا 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.”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 9:4