Hajj, or pilgrimage to Mecca, the birthplace of prophet Mohammad and the City of prophet Ibrahim and the land of Adam when he recognized Allah and also the center of revelation of the Quran to mankind through his last messenger. The place of revelation of the law of the Creator, Quran, to all men at the House of people. It is mandatory for Muslims to perform this universal act of worshiping once in a life time. If one is able to do so. As it is mentioned in the Quran in Sura 3, Ayah 97: "And Men owe to Allah "pilgrimage to the House, those who can afford the journey…." The laws of performing Hajj are mentioned in the Quran in ten places. Hajj or pilgrimage is performed in the month of Thw Al-Hajja or the twelfth month by all the Muslims regardless of their nationality or race. It presents unity and justice around the House of Allah, that is the House of the people according to His laws which are the laws for mankind. Hajj also means message. It is the message of how to activate our constitution, Quran, in action. The message of unity in uniformity of clothing (2 pieces of white material ) while in the boundary of the House and obedient to the law of the House. The message of one law in the House and around that law as one family together.