On this day the Prophet Mohammad was ordered by the Almighty to publicly and officially appoint Imam Ali as his successor and to seek the Muslims' allegiance for Ali. He therefore ordered all caravans returning from Hajj to stop at Ghadir Khumm. As soon as all the pilgrims were gathered, he revealed a message to the people.
The message was: "O Messenger, deliver to the people what has been revealed to you from your Lord and if you do not do so then you will not have delivered His message and Allah will protect you from the people. For God does not guide those who reject Faith."
Near the end of Prophet Muhammad's blessed life, he had been uneasy. There was a potential for disunity in the nascent Muslim community. Muhammad declared his own son-in-law and cousin, Ali ibn Abu Taleb, as his spiritual and secular heir publicly at God's command.
After declaring Hazrat Ali his successor by raising his hand and calling him the true leader of Muslims after himself, Prophet Muhammad called on Muslims to give allegiance to their Imam. All Muslims declared allegiance to Imam Ali as the leader of the believers by congratulating him on this great honor.
However, after the death of Prophet Mohammad some Muslims did not observe or adhere to the allegiance that they had sworn to Imam Ali; some did. Those who did adhere to Allah's command and obeyed the order of the Prophet Mohammad became known as the partisans of Ali, the Eid Ghadir is considered one of the most important religious celebrations around thw world. Muslims demonstrate their allegiance great love and respect for Imam Ali.
On this day men, women, and children dress in their finest clothing to visit their relatives and friends,and later rewarded with