(8) باب مَا يُكْرَهُ مِنَ التَّبَتُّلِ وَالْخِصَاءِ
Narrated Sa`d bin Abi Waqqas:
Allah's Messenger (ﷺ) forbade `Uthman bin Maz'un to abstain from marrying (and other pleasures) and if he had allowed him, we would have gotten ourselves castrated.
Reference: Sahih al-Bukhari 5073
In-book reference: Book 67, Hadith 11
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 62, Hadith 11