The issue of Ghadir is not an event befallen the Imam. In fact, Ghadir is something the Imam created. This noble personality and fountainhead of sound human qualities prompted the Ghadeer to take place. Ghadeer has no value for the Imam.
That which is valuable is the Imam himself. It has been known to Almighty God that after the Messenger of Allah there is no one among men who could implement justice in a pleasing and efficient manner. He commissioned the Messenger of Allah to appoint this person who had the power to implement justice in its true sense in the society and have a divine government.
The founder of the Islamic Republic introduced Imam Ali (peace be upon him) as the perfect man, true successor of the holy prophet and manifestation of divine names.
Imam Khomeini used to congratulate the Iranian nation and all Muslims around the world on the auspicious occasion of Eid al-Ghadir Khumm.
Imam Khomeini emphasized on following the footsteps of the Imam Ali (PBUH), the truthful successor of the holy prophet of Islam in all perspectives.
The Muslims commemorated the Eid al Ghadeer, celebrating the occasion of Prophet Mohammad (PBUH) appointing Imam Ali (PBUH) as his successor.
Prophet Mohammd received a revelation from God, ordering him to halt the pilgrims at a pond called Khum, a place near Mecca, and to designate Imam Ali (PBUH) as his successor in guiding and ruling Muslims.
This Ghadir e Khumm event happened on the 18th of Dhil Hijjah (1410 AH), in 10 Hijra in front of nearly one hundred thousand (100,000) Muslims. While returning from the last hajj (Hajjatul wida / farewell pilgrimage) of our Holy Prophet (PBUH).
O Messenger! Deliver what has been revealed to you from your Lord; and if you do it not, then you have not delivered His message, and Allah will protect you from the people; (AL MAEDA/5:67)
This day have I perfected for you your religion and completed My favor on you and chosen for you Islam as a religion; (AL MAEDA/5:3)