Fighting for the Cause of Allah (Jihaad)

Bukhari :: Book 4 :: Volume 52 :: Hadith 186

Narrated 'Aisha:

Once the Jews came to the Prophet and said, "Death be upon you." So I cursed them. The Prophet said, "What is the matter?" I said, "Have you not heard what they said?" The Prophet said, "Have you not heard what I replied (to them)? (I said), ('The same is upon you.')"