Musnad Abu Ya'la al-Mawsili 115:182

Abu Musa narrated to us, Mu'adh bin Hisham narrated to us, he said: My father narrated to me, from Qatadah, from Anas: That a man from the people of the desert asked the Prophet of Allah, may Allah bless him and grant him peace—and they were more likely to ask him than his companions—he said: "O Messenger of Allah, when is the Hour?" He said: "And what have you prepared for it?" He said: "I have not prepared much for it, except that I love Allah and His Messenger." He said: "Then you are with whom you love." Anas said: "I have not seen the Muslims rejoice over anything after Islam more intensely than their rejoicing at his saying."