The Ghadīr Khumm was a gathering of Muslims to attend a sermon delivered by the Islamic prophet Muhammad on 16 March 632 CE. The gathering is said to have taken place by the ghadir (pool) in the wadi of Khumm, located near the then settlement of al-Juhfa on the path between Mecca and Medina, where Muhammad halted the large caravan of Muslims who had accompanied him in the Farewell Pilgrimage, his only Hajj ritual.
The Investiture of Ali at Ghadir Khumm in the fourteenth-century Ilkhanid copy of Chronology of Ancient Nations, illustrated by Ibn al-Kutbi
Ali publicly referred to the Ghadir Khumm during his caliphate, here he is shown receiving the pledge of allegiance in a manuscript by the Ottoman Sufi writer and poet Lami'i, late sixteenth century
Modern Shia artwork depicting the Ghadir Khumm, sourced from the website of Iran's leader, Ali Khamenei
Welayah or Walaya is a general concept of the Islamic faith and a key word in Shia Islam that refers, among other things, to the nature and function of the Imamate.
A Fatimid medallion depicting the Purity of Ahl al Bayt