There has come to you from Allah a light and a clear Book. By which Allah guides those who pursue His pleasure to the ways of peace and brings them out from darknesses into the light, by His permission, and guides them to a straight path. (Al-Maida, 5:15-16)
The city of Yathrib was racked by violence and conflict, until the Prophetic message entered the hearts of the people. After the Prophet migrated, the city became known as Al-Madina Al-Munawwarah, the Radiant City, illuminated by the light of Divine guidance and the best of Creation, the Messenger of God. The light that Madina became after the darkness of Yathrib was a reality, with real human beings, not a distant utopian ideal. Its success, along with entire ummah, was, and is, predicated on the degree to which our hearts are receptive to the light of the Messenger.