Sa'id ibn al-Musayyib سعيد بن المسيب بن حزن أبو محمد القرشي · The Book of Marriage

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.

It was narrated that 'Alqamah said: "I was with Ibn Mas'ud while he was with 'Uthman, may Allah be pleased with him, and 'Uthman said: 'The Messenger of Allah came out to some fityah (young men)--Abu 'AbdurRahman said, 'I did not understand (the word) fityah as I would want'-- and said: 'Whoever among you can afford it, let him get married, for it is more effective in lowering the gaze and guarding chastity, and whoever cannot, then fasting will be…

It was narrated that Al-Mughirah bin Shu'bah said: "I proposed marriage to a woman during the time of the Messenger of Allah, and the Prophet said: 'Have you seen her?' I said: 'No.' He said: 'Look at her, for that is more likely to create love between you.'"