Musnad Abu Ya'la al-Mawsili 112:3

Hadba ibn Khalid narrated to us, Mubarak narrated to us, he said: I heard al-Hasan from Anas that a man said to the Prophet, may Allah bless him and grant him peace: "When is the Hour?" The Messenger of Allah, may Allah bless him and grant him peace, said: "As for it, it is established, so what have you prepared for it?" He said: "I have not prepared much for it, except that I love Allah and His Messenger." The Messenger of Allah, may Allah bless him and grant him peace, said: "Then you are with whom you love, and you shall have what you have anticipated." Then he said: "You ask me about the Hour, and by the One in Whose hand is my soul, there is no breathing soul on the earth today upon whom one hundred years will come." Then the Messenger of Allah, may Allah bless him and grant him peace, prayed, then said: "Where is the one who asked about the Hour?" The man was brought, his limbs trembling. The Messenger of Allah, may Allah bless him and grant him peace, looked at a boy from Daws who was called Sa'd and said: "If this one lives, he will not grow old until the Hour is established." Anas said: "And I was on that day the size of the boy."