When we look at the lives of the Holy Prophet (S) and the Imams (A.S.), not only we do not see anything about mourning and lamentation but there are evidence and sayings prohibiting such acts. For example, Hamza (A.S.) was martyred in the Battle Uhud or later when Ja’far bin Abi Talib was martyred, not only the Prophet (S) did not hold such ceremonies but he forbade others from doing so. Now, the question arises as to when and how these religious rituals developed and came into existence.