Imam Khomeini the religious and spiritual leader of the Muslim world frequently used to highlight significance of the 15th Sha'ban, the birthday of twelfth infallible Imam known as savior and described the event as the most significant Eid for all humankind .The belief for emergence of the contemporary infallible Imam is considered to be a firm pillar of Shia Muslims' beliefs which reminds us of hope, faith, ultimate fortune and victory of good powers. The great leader of the Muslim world said elsewhere: "I am hopeful that the certain day will approach when the promise of God will come true and the oppressed will become inheritors of the earth. We may easily jump to the conclusion that the belief in emergence of the twelfth Imam the savior should be interpreted as undertaking serious efforts to launch and establish justice across the world's societies. In this sense and context, everybody who takes concrete and solid steps to implement real justice, will be considered closely associated to the infallible savior. For that reason, the great Imam closely allied and linked the Islamic Revolution wit