This is a brief explanation of the obligatory knowledge of Islam that one who is an accountable Muslim must learn. In this lecture, Sheikh Ibrahim Shafie briefly discusses the obligation to believe that Prophet Muhammad Peace Be Upon Him is the last of all the Prophets and Messengers and that he is the best of the creations. The Sheikh also briefly discusses about the obligation to beleive that all the Prophets have the good attributes, such as them being truthful and intelligent before and after Prophethood and reject what does not befit them.