““Now in Medina, with its Jewish clans, he created the first mosque,a adopting the Jerusalem Temple as the first qibla, the direction of prayer. He prayed at Friday sundown—the Jewish Sabbath—fasted on the Day of Atonement, banned pork and practised circumcision. The oneness of Muhammad’s God rejected the Christian Trinity but other rituals—the prostration on prayer mats—owed much to Christian monasteries;””
