- This article is about a sermon of the Prophet (s) appointing 'Ali (a) as his successor. For other uses, see Ghadir (disambiguation).
Al-Ghadīr Sermon (Arabic: خطبة الغدير) is a sermon delivered by the Prophet (s) where he (s) introduced 'Ali (a) as the Wali (guardian) of Muslims. The prophet (s) delivered this sermon on Dhu l-Hijja 18 of 10/March 19, 632) on the return from Hajjat al-Wida' [Hajj of Farewell] in a place called Ghadir Khumm. Many Shi'a and Sunni scholars have narrated this sermon.