It was narrated that Sa`d bin Waqqas said:
Mu`awiyah came on one of his pilgrimages and Sa`d entered upon him. They mentioned `Ali, and Mu`awiyah criticized him. Sa`d became angry and said: 'Are you saying this of a man of whom I heard the Messenger of Allah (ﷺ) say: If I am a person's close friend, `Ali is also his close friend. And I heard him say: You are to me like Harun was to Musa, except that there will be no Prophet after me. And I heard him say: I will give the banner today to a man who loves Allah and His Messenger.