Hadith #1083 (Jami' al-Tirmidhi)
Book: The Book on Marriage
Narrator(s): Aqeel bin Maqrn al-Mazni, Hatm bin Isma'il al-Madni حاتم بن إسماعيل المدني, Muhammad bin 'Amr bin 'Alqama محمد بن عمرو بن علقمة, Muhammad bin Ja'far Ghandar محمد بن جعفر غندر صاحب الكرابيس, Sa'id bin 'Ubaid al-Tai'i سعيد بن عبيد الطائي

“The Messenger of Allah refused Uthman bin Ma’zun (when he asked) regarding celibacy, and if he had permitted it for him, then we would have castrated ourselves.”

Source: https://parallelquran.com/hadith/jami-al-tirmidhi-1083/