I heard Allah's Messenger (may peace be upon him) say about...
I heard Allah's Messenger (may peace be upon him) say about 'Ali as he left behind him in one of his campaigns (that was Tabuk). 'Ali said to him: Allah's Messenger, you leave me behind along with women and children. Thereupon Allah's Messenger (may peace be upon him) said to him: Aren't you satisfied with being unto me what Aaron was unto Moses but with this exception that there is no prophethood after me.
And I (also) heard him say on the Day of Khaibar: I would certainly give this standard to a person who loves Allah and his Messenger and Allah and his Messenger love him too. He (the narrator) said: We have been anxiously waiting for it, when he (the Holy Prophet) said: Call 'Ali. He was called and his eyes were inflamed. He applied saliva to his eyes and handed over the standard to him, and Allah gave him victory.
(The third occasion is this) when the (following) verse was revealed:" Let us summon our children and your children." Allah's Messenger (may peace be upon him) called 'Ali, Fatima, Hasan and Husain and said: O Allah, they are my family.
appointing 'Ali as his deputy (in Medina). 'Ali said, "Do you want to leave me with the children and women?" The Prophet said, "Will you not be pleased that you will be to me like Aaron to Moses? But there will be no prophet after me." References: o Sahih Bukhari, Volume 5, Book 59, #700, Book of al-Maghaazi; Page 917, #4416, Arabic version Amir b Sa'd b.
Abi Waqqas reports (l on the authority of his father that Allah's Messenger (may peace be upon him) addressing 'Ali said: You are in the same position with relation to me as Aaron- (Harun) was in relation to Moses but with (this explicit difference) that there is no prophet after me.