Musnad Abu Ya'la al-Mawsili 119:11

Abu Khaythama narrated to us, Jarir narrated to us, from Mansur, from Salim ibn Abi al-Ja'd, who said: Anas ibn Malik narrated to me, saying: While I and the Messenger of Allah (may Allah bless him and grant him peace) were exiting the mosque, a man met us at the threshold of the mosque. He said: "O Messenger of Allah, when is the Hour?" The Messenger of Allah (may Allah bless him and grant him peace) said: "What have you prepared for it?" The man seemed to hesitate, then said: "O Messenger of Allah, I have not prepared much prayer, nor fasting, nor charity for it, but I love Allah and His Messenger." He said: "Then you are with whom you love."