Tradition

The Prophet (s.a.w.a.) informed – When I was made to ascend the fourth heaven I saw the figure of Ali bin Abi Talib (a.s.). I told Jibrail – This is my brother Ali (a.s.). It was revealed to me – This is an angel. Allah has created him in the image of Ali bin Abi Talib (a.s.). Seventy thousand angels visit him every day. They glorify and magnify Allah, the reward of which is reserved for the lovers of Ali bin Abi Talib (a.s.).
Bashaarah al-Mustafa Le Shiah al-Murtaza v 2 p 160 Behaar al-Anwaar v 39 p 111