There are two guys are standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells to the other guy that in five minutes, he will be stabbed in the back.
Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?
When the five minutes passed away, the guy turned around to make sure nobody was there. At this moment, the prophet stabbed him in back.