Sahih al-Bukhari 5073
صحيح البخاري#5073SahihNarrated 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 67:11