During Hajj, Muslims from diverse backgrounds come together, dressed in simple garments, demonstrating the unity and equality of all believers before Allah. This experience fosters a sense of brotherhood, compassion, and solidarity. There are steps to Hajj without which Hajj can never be complete. Read the famous book Rafiq ul Haramain for details. https://www.dawateislami.net/bookslibrary/ur/rafiq-ul-haramain