To have iman means to begin following Prophet Muhammad (alaihi-salam) and to enter through the door of bliss. Allahu Taala sent him to invite all the people of the world to bliss and declared in the twenty-eighth ayat of Saba Sura: “Oh my beloved Prophet! (sall-Allahu alaihi wa sallam) I sent you to humanity so that you should give the good news of endless bliss to all the people in the world and to guide them along this way to happiness.” Endless Blıss First Fasicle: 31