(1) باب اسْتِحْبَابِ النِّكَاحِ لِمَنْ تَاقَتْ نَفْسُهُ إِلَيْهِ وَوَجَدَ مُؤْنَةً وَاشْتِغَالِ مَنْ عَجَزَ عَنِ الْمُؤَنِ بِالصَّوْمِ
Sa'd b. Abi Waqqas (Allah be pleased with him) reported:
The Messengger of Allah (ﷺ) rejected (the idea) of Uthman b. Muz'unliving in celibacy (saying): And if he (the Holy Prophet) had given me permission We would have got ourselves castrated.
Reference: Sahih Muslim 1402 a
In-book reference: Book 16, Hadith 7
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3237