Sunan At-Tirmidhi

Anas narrated that a man came to the Messenger of Allah (s.a.w) and said:"" O Messenger of Allah! When will the Hour be established?"" So the Propher (s.a.w) stood to perform Salat and when he was finished his Salat he said: ""Where is the one who asked when the hour will be established?"" The man said: ""It was I, O Mesenger of Allah!"" He said: ""What have you prepared for it?"" He said: ""O Messenger of allah! I have not prepared very much of salat nor fasting for it, but I love Allah and His Messenger."" So the Messenger of Allah(s.a.w) said: ""A man shall be with whom ever he loves, and you shall be with whomever you love."" So after the advent of Islam, I did not see that anything brought the Muslims more happiness than that