The story of Ali is very well known: a plot was discovered, that one night some enemies wanted to kill the Prophet, and Ali learnt about it. He did not tell the Prophet, but persuaded him to leave home. He himself stayed, for he knew that if he went too the assassins would follow him and find out where the Prophet was. He slept in the same bed in place of the Prophet, so that the assassins might find him, though at the same time he did not intend to lose his life if he could fight them off. The consequence was that the plot failed and the enemies could not touch either the Prophet or Ali.