Prophet Muhammed (saws) on Imam Ali (as)

The Prophet (P.B.U.H) said, “The most miserable person from the beginning of the world to the end is the murderer of Ali (A.S).” Mustadrak Al-Sahihain of Al-Hakim Al-Nisabori, 3/141; Musnad Ahmad, 4/263; Al-Khasa’is of Al-Nisa’i 39; Al-Tabari, 2/408; Kenz Al-Omal, 5/58.