tell people that idolatry was the practice of empty rituals. The true religion was the worship of one God, obedience to His commands alone, and a life lived in accordance with His will. He stressed that the
Hereafter; only to monotheism would any value be attached. The true monotheists would be rewarded by God with heaven in the Hereafter.
His method of propagating the true faith (dawah) consisted mostly of
place where people had gathered and would say: “O people, say there is no Being worthy of worship save God and you will be successful.” In this way the Prophet continued to communicate the message of monotheism