The Book Pertaining to the Turmoil and Portents of the Last Hour (Kitab Al-Fitan wa Ashrat As-Sa`ah)
Muslim :: Book 41 : Hadith 6984
Abdullah b. 'Umar reported that Allah's Messenger (may peace be upon him) said: The Jews will fight against you and you will gain victory over them until the stone would say: Muslim, here is a Jew behind me; kill him.