Musnad Ahmad 5:106

Muhammad ibn Abdullah ibn al-Zubayr narrated to us, Aban—meaning ibn Abdullah—narrated to us, Amr ibn Ghazi narrated to me, my uncle 'Ilba' narrated to me, from Ali, who said: The camels of the Sadaqah (charity) passed by the Messenger of Allah, may Allah bless him and grant him peace. He said: So he reached with his hand toward a tuft of hair from the side of a camel and said: "I am not more entitled to this tuft of hair than any man among the Muslims."