The Prophet (s) said, “I am the warner, and the guide after me is Ali (a).” Musnad Ahmad, 1/151; Al-Tirmidhi, 2/135; Al-Khasa’is of Al-Nisa’I, 20; Kenz Al-Omal, 1/247; Ibn Al-Maghazeli, 222

The Prophet (s) said, "Ali (a) is the door of my knowledge, and
the one who will clarifies for my nation that which I was sent with."
Tafsir Al-Tabari, 3/171; Shawahid Al-Tanzil, 2/356; Al-Darr Al-
Manthour, 6/379; Yanabi^ Al-Mawda, 61.

The Prophet (s) said, "Ali (a) is the distinguisher between truth
and falsehood." Mustadrak Al-Sahihain of Al-Hakim Al-Nisabori, 3/132;
Musnad Ahmad, 1/331; Yanabi^ Al-Mawda, 92.

The Prophet (s) said, "The most knowledgeable person in my nation after me is Ali (a)." Manaqib Al-Imam Ali Ibn Abi TAlib (a) of Ibn Al-
Maghazeli Al-Shafi^i.