Jami` at-Tirmidhi Book 11, Hadith 1
The Messenger of Allah said: "Four are from the Sunan of the Messengers: Al-Hayat, using Atar, the Siwak, and marriage."
The Messenger of Allah said: "The believer's soul is suspended by his debt until it is settled for him."
"We went with Allah's Messenger, while we were young men who had nothing. He said: 'O young men! You should marry, for indeed it helps in lowering the gaze and protecting the private parts. Whoever among you is not able to marry, then let him fast, for indeed fasting will diminish his sexual desire."