The Ghadir Khumm was an event that took place in 16 March 632, shortly before the death of the Islamic prophet Muhammad. The event occurred at a pond known as Ghadir Khumm, located near Juhfa between Mecca and Medina. During the event, Muhammad delivered a speech in which he said of his cousin and son-in-law Ali: “For whoever I am his mawla, Ali is his mawla.” The Arabic term mawlā has several meanings and can be used in different contexts. Depending on the context, it may refer to master, patron, protector, ally, supporter, client, associate, friend, or one with authority. Because mawlā has a wide semantic range, the interpretation of the term is central to the differing Sunni and Shia understandings. The event is particularly significant in Shia Islam, where it is understood as Muhammad's formal designation of Ali as his successor and the first Imam. Shia Muslims interpret the term mawla as meaning leader, authority, or one entitled to obedience. The event is commemorated annually as Eid al-Ghadir on 18 Dhu al-Hijjah.