Musnad Ahmad 32:1224

Rawh narrated to us, Shu'bah narrated to us, he said: I heard Mansur, he said: I heard Salim ibn Abi al-Ja'd narrating from Anas ibn Malik, that a man asked the Messenger of Allah, peace and blessings of Allah be upon him: "When is the Hour?" He said: "What have you prepared for it?" He said: "I have not prepared much for it in the way of fasting, nor prayer, nor charity, but I love Allah and His Messenger." He said: "You are with whom you love."