Volume 4, Book 56, Number 806:
Narrated Abu Huraira:
The Prophet said, “The Hour will not be established till there is a war between two groups among
whom there will be a great number of casualties, though the claims (or religion) of both of them will
be one and the same. And the Hour will not be established till there appear about thirty liars, all of
whom will be claiming to be the messengers of Allah. “