IN THE NAME OF ALLAH THE BENEVOLENT THE MERCIFUL
On the 18th day of the holy month of Zilhijja in the 10th year of Hijra, on his return from Hajjatul-Vida at a location famous as `Ghadir-e-Khom, the Prophet Muhammad(PBUH) was asked by Allah through the revelation of this verse:
"balligh ma unzila ilayka.............." (Qur'an 5: 67)
" Deliver what has been revealed to you ..."
to announce what he did announce at Ghadeer e Khum.
He delivered a very important sermon and while holding and lifting the hand of Imam Ali (A.S.), He addressed a reported 120,000 Muslims gathered there:
"O people! Is it not true that my `Wilayat" over you (believers) is of more importance than your `Wilayat" over yourselves?" To this question, the people answered in the affirmative. Then the Prophet (PBUH) announced:
"The one whose Mawla (supreme master) I am, this Ali is his Master.
O Allah! Love him who loves Ali, and be the enemy of the enemy of Ali...."
In that gathering at Ghadir-e-Khom, the Prophet (PBUH) also spoke regarding other important matters that stress on the importance of Imamate and Wilayat in the Islamic context. One of his important announcements was as follows:
"O people! I shall soon be departing from your midst. And you will meet me at the Pond of `Kawthar". Then I will ask you about two precious things (Thaqalayn). So be careful as to how you treat these two, after my demise."
Then the people inquired from the Prophet (PBUH) regarding the "two precious things" which he had referred to.
The Prophet (PBUH) explained: "One of them is the Qur’an- one end of which is in Allah’s Hand and the other is in yours. So stick on tightly to it, so that you protect yourself from being misled. And the second one is my Pure Household."
At the end of the Prophet’s (PBUH) sermon, many of the people came forward to congratulate Ali (A.S.) and to extend their hands in allegiance to him. Among those who did so was 'Umar bin al- Khattab, who said: "Well done Ibn Abi Talib! Today you became the master of all believing men and women."
However, as for reliable Islamic sources, this incident has strong recorded evidence and it has been narrated through many chains of transmission of both Shi"a and Sunni schools of thought.
After this announcement at Ghadeer the last verse of the Qur'an (in chronological order):
"al-yawma akmaltu lakum deenakum ........." (Qur'an 5:04)
" Today I prefected for you your religion..."