He learns all the ins and outs of the rules. He visits hell. Now he's got a story to tell and then he descends back to earth where the people that are following his new faith become to be persecuted even more. So then in 622 he decides, I'm getting out of Dodge. Well, I'm getting out of Mecca. And he has a pilgrimage with all of his people, an exodus, which is called a hijrah. And he moves his people to a new city called Medina where he is welcomed.