Yahya related to me from Malik that he had heard that A'isha, thewife of the Prophet, may Allah bless him and grant him peace, said, "Aman asked permission to come in to see the Messenger of Allah, mayAllah bless him and grant him peace. I was with him in the house andthe Messenger of Allah, may Allah bless him and grant him peace, said,'He is an evil member of his tribe.' Then the Messenger of Allah, mayAllah bless him and grant him peace, gave him permission."A'isha continued, "It was not long before I heard the Messenger ofAllah, may Allah bless him and grant him peace, laughing with him.When the man left, I said, 'Messenger of Allah, you said what you saidabout him, and then before long you were laughing with him.' TheMessenger of Allah, may Allah bless him and grant him peace, replied,'Among the most evil of people is the one whom people are cautiouswith because of his evil.' "
USC-MSA web (English) reference: Book 47, Hadith 4
Arabic reference: Book 47, Hadith 1639