OK so lets break down the facts here.
A guy is hitting the booze so hard he moves to Saudi Arabia to get away from it, this tells us that his central nervous system already might not be in working order. He attends the Haj, during this time he has a hallucination. One of his friends suspects he ate too much food and tells him to go back to sleep. His amazing evidence for all this? Not a completely white spot on his chest in stark contrast to the rest of his chest hair but the middle aged salt and pepper chest hair you might see on a billion old blokes the world over if you stared at their tits close enough.
You weren't even trying were you?