Volume 8, Book 76, Number 489:
Narrated Abu Musa:
Allah’s Apostle said. “My example and the example of the message with which Allah has sent me is
like that of a man who came to some people and said, “I have seen with my own eyes the enemy
forces, and I am a naked warner (to you) so save yourself, save yourself! A group of them obeyed him
and went out at night, slowly and stealthily and were safe, while another group did not believe him
and thus the army took them in the morning and destroyed them.”