Sahih Muslim
1402.01

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

1402.02

Sa'id b. al-Musayyib reported:I heard Sa'd (b. Abi Waqqas) saying that the idea of 'Uthman b. Maz'un for living in celibacy was rejected (by the Holy Prophet), and if he had been given permission they would have got themselves castrated

1402.03

Sa'id b. al Musayyib heard Sa'd b. Abi Waqqas (Allah be pleased with him) saying that Uthman b. Maz'un decided to live in celibacy, but Allah's Messenger (ﷺ) forbade him to do so, and if he had permitted him, we would have got ourselves castrated