"We, the people of the Ansar, used to recognize the hypocrites, by their hatred for 'Ali bin Abi Talib."
Jami` at-Tirmidhi Book 49, Hadith 113
← Previous Hadith that the Prophet (ﷺ) said to 'Ali bin Abi Talib: "You are from me, and I am from you." And there is a story along with this Hadith.

Jami` at-Tirmidhi Book 49, Hadith 112 Next Hadith → from his mother who said: "I entered upon Umm Salamah, and I heard her saying: "The Messenger of Allah (ﷺ) used to say: "No hypocrite loves 'Ali, and no believer hates him."

Jami` at-Tirmidhi Book 49, Hadith 114