The Book Pertaining to the Turmoil and Portents of the Last Hour (Kitab Al-Fitan wa Ashrat As-Sa`ah)
Muslim :: Book 41 : Hadith 7045
Anas b. Malik reported that Allah's Messenger (way peace be upon him) said: I and the Last Hour have been sent like this. Shu'ba said: I heard Qatada as saying in his narration: The excellence of one over the other. And I do not know whether he narrated it from Anas or Qatada himself said so.