Then the Holy Prophet (s.a.w.a.) said: I swear by the One who raised me with Prophethood and chose me over all creatures, surely I and they are the noblest of all creatures before Allah Mighty and Majestic be He and there is no person on the face of the earth who is dearer to me than them. As for Ali bin Abi Talib (a.s.) then he is my brother and my equal and the Master of the Affair after me and my Standard bearer in this world as well as the Hereafter and the Master of my fountain and my intercession and he is the Master of every Muslim and the Imam of every Momin and the leader of every pious one. He is my successor and my Caliph upon my family and my nation in my life and after my death. The one, who loves him, loves me. The one, who hates him, hates me. Through his Wilayat the nation shall become worthy of the Mercy of Allah! Through hatred of him, his enemies shall become worthy of the Curse of Allah! Surely I wept when he entered because I remembered the treachery till he shall be dispossessed from my seat and indeed Allah has appointed him after me. Then the matter shall come to some a pass that he shall be struck with a sword on his head which shall dye his beard (in his blood) in the best of the months. The month of Ramazan, the one in which the Holy Quran was revealed, a guidance for the people and clear signs for all the people and the distinguisher.
Al-Khesaal p 68 Behaar al-Anwaar v 28 p 40