Hadith of Tayr (Bird)
Hadith of Tayr is an authentic narration which shows the superiority of Imam Ali (as) over all of Allah’s (swt) creation after the Holy Prophet (pbuh). The tradition relates that one day a woman brought a gift of a roasted bird to the Prophet. Before eating it, the Prophet invoked Allah asking for the best of Allah's creation and one who is the most dearest to Allah and the Prophet so that he may share the bird with him. Subsequently, Ali came in and ate the roasted bird with the Holy Prophet. 
The narration goes as follow:
Anas ibn Malik who said: "I was serving the Messenger of Allah (swt) and a roasted bird was presented to him. He said: “O Allah, bring me the most beloved of your creation to share this bird with me.” I said: "O Allah, make it a man from the Ansar." Then Ali came. I said to him: "Messenger of Allah is engaged in something." He came again and I said: "The Messenger of Allah is engaged in something." He came again and the Messenger of Allah said: "Open the door," and so he entered and the Messenger of Allah said: "What is your business, O Ali?" He said, "This is the third time I came by and each time Anas sent me away. He claimed you were engaged in something." The Messenger of Allah said: "Why did you do what you did?” I said, “O Messenger of Allah, I heard your supplication and wished it to be someone from my people." The Messenger of Allah then said: "The man loves his people."