Sahih Bukhari
Wedlock, Marriage (Nikaah)
Volume: 007 / Book Number: 062 / Hadith Number: 11
Narrated Sad bin Abi Waqqas:
Allah's Apostle forbade 'Uthman bin Maz'un to abstain from marrying (and other pleasures) and if he had allowed him, we would have gotten ourselves castrated.(1)