Arbaeen, meaning “forty” in Arabic, is one of the world’s largest annual pilgrimages. This year, it will be observed from the evening of Sunday, August 25, to Monday, August 26, 2024. Arbaeen falls on the 20th day of Safar, the second month of the Islamic lunar calendar. It marks the end of a 40-day mourning period that begins with Ashura, which commemorates the martyrdom of Hussain ibn Ali. This year, Ashura was observed from the evening of Monday, July 15, 2024, to Tuesday, July 16, 2024. Besides Ashura, Arbaeen is also associated with Hussain. But who was he, and what is his story? Hussain …