The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)

Muslim :: Book 31 : Hadith 6135

Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: You would find people like those of mine, the good amongst you in the Days of Ignorance would be good amongst you in the days of Islam, provided they have an understanding of it and you will find good amongst people the persons who would be averse to position of authority until it is thrust upon them, and you will find the worst amongst persons one who has double face. He comes with one face to them and with the other face to the others.