وَعَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ قَالَ: رَدَّ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَلَى عُثْمَان ابْن مَظْعُونٍ التَّبَتُّلَ وَلَوْ أَذِنَ لَهُ لَاخْتَصَيْنَا

Sa'd b. Abu Waqqas said

God’s Messenger objected to ‘Uthman b. Maz’un living in celibacy. If he had given him permission we would have had ourselves castrated. (Bukhari and Muslim.)