Muslim bin Haisam narrated from Ash' ath bin Qais who said: "I came to the Messenger of Allah with a delegation from Kinah and they thought that I was the best of them, I said: “0 Messenger of Allah, are you not from among us?' He said: 'We are the tribe of Banu Nadr bin Kinanah, and we do not attribute ourselves to our mother and we do not deny our forefathers.” He said: "Ash' ath bin Qais used to say: “If any man is brought to me who suggests that a man fromQuraish does not belong to Nadr bin Kinanah, I would carry out the legal punishment (for slander) on him.”