Hadith:Chief of the believers.

The messenger pointing to `Ali, said:
“This is the first to have believed in me, the first to shake hands with me on the Day of Resurrection; he is the foremost friend, and he is the faruq of this nation who distinguishes between right and wrong; he is the chief of the believers.”

Reference:

al-U’ummal, by al-Muttaqi al-Hindi, vol 11, #32990 ● Mu’ajam al-Tabarani al-Kabir Bayhaqi in his Sunan
● Kanz • al-
● Ibn `Uday in his Al-Kamil