'Urwa ibn az-Zubayr heard 'A'isha say, "A man asked permissionto visit the Prophet, may Allah bless him and grant him peace, and theProphet said, 'Give him permission. He is an evil brother of his tribe.'When he entered he spoke kindly to him. I said, 'Messenger of Allah, yousaid what you said and then you spoke kindly to him.' He replied, 'Yes,'A'isha. The worst of people is the one people leave alone fearing hiscoarseness.'"
English reference: Book 56, Hadith 1311
Arabic reference: Book 1, Hadith 1311