Sahih Bukhari Volume 002, Book 015, Hadith Number 076.
Sahih Bukhari Volume 004, Book 052, Hadith Number 177.
Narated By Abu Huraira : Allah's Apostle said, "The Hour will not be established until you fight with the Jews, and the stone behind which a Jew will be hiding will say. "O Muslim! There is a Jew hiding behind me, so kill him."