O 'Ali, you are to me as Aaron was to Moses, except that there will be no prophet after me.

The Messenger of Allah said on the Day of Khaybar: I will give this banner tomorrow to a man at whose hands Allah will grant victory. A man who loves Allah and his Messenger, and whom Allah and his Messenger love. So the people spent the night wondering who would it be given to. In the morning, people went to the Messenger of Allah, each hoping that he would be given it. The prophet (PBUH) said: Where is Ali ibin Abi Talib? People responded: O Messenger of Allah, there is something wrong with his eyes. So they sent for him, and he was brought. Then, the Messenger of Allah spat in his eyes and made a supplication for him, so he was healed, as if he had no ailment. So he gave him the banner. Ali said: O Messenger of Allah, shall I fight them until they become like us? So the prophet (PBUH) said: Advance patiently and calmly until you reach their territory, then call upon them to accept Islam and inform them about their duties according to Allah's rights in Islam. For by Allah, if Allah guides even one man through you is better for you than to have red -the most valuable- camels.

I, Husein ibn Sabra and 'Umar ibn Muslim went to Zeid ibn Arqam. When we sat down with him, Husein said to him: O Zeid, you have attained much goodness! You saw the Messenger of Allah (PBUH), heard his sayings, fought alongside him, and prayed with him. You have indeed attained much goodness. O Zeid. Tell us what you heard from the Messenger of Allah (PBUH). Zeid replied: O son of my brother, I have grown old, my time has passed, and I have forgotten some of what I used to remember from the Messenger of Allah (PBUH). So, accept whatever I tell you, and do not burden me with what I do not remember. Then he said: One day, the Messenger of Allah (PBUH) stood up to deliver a sermon at a watering place called Khum, between Mecca and Medina. He praised and glorified Allah, exhorted and reminded us, and then said: O people! Verily, I am only a human being, and the messenger of my Lord [death] is about to come to me, and I will respond. I am leaving behind two weighty things among you: the first is the Book of Allah, in which there is guidance and light, so take hold of the Book of Allah and adhere to it. He urged people to follow the Book of Allah and encouraged it. Then he said: And my family, I remind you by Allah regarding my family, I remind you by Allah regarding my family, I remind you by Allah regarding my family. Husein asked: Who are his family, O Zeid? Are not his wives part of his family? He replied: His wives are part of his family, but his family are those who are forbidden to receive charity after him. Husein asked: Who are they? Zeid replied: They are the house of 'Ali, the house of 'Aqil, the house of Ja'far, and the house of 'Abbas. Husaein asked: Are all of these forbidden to receive charity? He replied: Yes.