The Book Pertaining to the Turmoil and Portents of the Last Hour (Kitab Al-Fitan wa Ashrat As-Sa`ah)
Muslim :: Book 41 : Hadith 7039
Abu Huraira reported Allah's Messenger (may peace be upon him) having said: Hasten to do good deeds before six things happen: the rising of the sun from the west, the smoke, the Dajjal, the beast and (the death) of one of you or the general turmoil.