Musnad Abu Ya'la al-Mawsili 175:1

'Amr ibn al-Dahhak ibn Makhlad ibn al-Dahhak narrated to us, my father narrated to us, Talib ibn Salma ibn 'Asim ibn al-Hakam narrated to us, he said: Some of my family narrated to me that my grandfather narrated to them that he witnessed the Messenger of Allah, may Allah bless him and grant him peace, during his pilgrimage in his sermon. He said: "Beware, indeed your wealth and your blood are sacred to you, like the sanctity of this city on this day. Beware, do not let me find you returning after me as disbelievers, striking the necks of one another. Beware, let the witness inform the absent, for I do not know if I will ever meet you after this day. O Allah, bear witness against them. O Allah, I have conveyed."