Quoted from [Eid-e Ghadir | the.ismaili](https://the.ismaili/us/en/news/eid-e-ghadir):

This week, Shia Muslims across the world observe Eid-e Ghadir, marking the anniversary of an important event in Muslim history. According to Shia belief, tradition, and interpretation of history, this occasion commemorates the pivotal gathering at Ghadir Khumm, when Prophet Muhammad (peace be upon him and his family) — based on a divine command from Allah — designated Hazrat Ali as his successor and the first in the continuing line of hereditary Imams.

According to Shia belief, by declaring Hazrat Ali as Mawla after him, the Prophet transferred his own spiritual authority bestowed upon him by Allah to Hazrat Ali, making him — and all the Imams that follow — the *Amirul Mu’minin*, or Master of the Believers.

This marks the end of the period of nabuwwa, or Prophethood, and the historical beginning of the Institution of Imamat. Eid-e Ghadir is an anniversary of special significance to all Shia Muslims, as it is also associated with the well-attested tradition in which the Prophet is said to have proclaimed:

>“I am leaving among you two matters of great weight (*al-thaqalayn*), the Book of Allah and my kindred (*itrati*), the People of my House (*Ahl al-Bayt*), and these two shall never be separated until they return to me at the Pool \[of Kawthar in Paradise on the Day of Judgement\]…”

Eid Mubarak!

Prophet Muhammad proclaims Imam Ali as successor | 14th century