It is obligatory to have Belief in the Messengership of the Prophet (Muhammad صَلَّى اللّٰهُ عَلَيْهِ وَسَلَّم ).Narrated Abu Hurairah رضی اللہ عنة: ALLAH’s Messenger Muhammad صَلَّى اللّٰهُ عَلَيْهِ وَسَلَّم said, “By Him (ALLAH) in Whose Hand Muhammad’s soul is, there is none from amongst the Jews and the Christians (of these present nations) who hears about me and then dies without believing in the Message with which I have been sent (i.e. Islamic Monotheism), but he will be from the dwellers of the (Hell) Fire.” (Sahih Muslim, the Book of Faith, Vol.1, Chapter No.240).