Hajj (pilgrimage to Mecca) is one of the Five Pillars of Islam and a very important but a complicated type of Ibadah (worship) as Mus-lims from all around the world get together to perform it together. They follow the interpretation of their Imams (jurists), so sometimes they look at others when they do not perform a specific virtue the way they do, then they think they are doing wrong, which is not so, but all of them are performing correctly according to the interpretation of their Imams. This book gives all these details in sequence according to all four imams the Muslim Ummah follows.