Merry Christmas is marked as the birth of Christ who they believe is the begotten son of God and here is the underlying Shirk that I have a problem being a Muslim cause Shirk is forbidden in Islam. Wishing Merry Christmas in Islam and entering the celebration with my fellow Christian associates I lose the scope of Dawah which should be my objective being a Muslim and my relation to a non-believer. Allah clearly denies the claim that He Has a son that does not mean that the prophet’s birth can’t be celebrated. Muslims don’t believe that Jesus is the son of Allah that doesn’t mean that Muslims can’t celebrate his birth as long as they are clear in thought.