From Sahih Muslim (Hadith 3398):
Alqama reported:While I was walking with 'Abdullah at Mina, 'Uthman happened to meet him. He stopped there and began to talk with him. Uthman said to him: Abu 'Abd al-Rahman, should we not marry you to a young girl who may recall to you some of the past of your bygone days; thereupon he said: If you say so, Allah's Messenger (ﷺ) said: 0 young men, those among you who can support a wife should marry, for it restrains eyes from casting (evil glances). and preserves one from immorality; but those who cannot should devote themselves to fasting for it is a means of controlling sexual desire
Reference: Muslim 3398