Musnad Abu Ya'la al-Mawsili 3:203

Abu Bakr ibn Abi Shaybah narrated to us, Abdullah ibn Numayr narrated to us, from Aban ibn Abdullah al-Bajali, who said: Amr, the nephew of 'Ilba', narrated to me, from 'Ilba', from Ali, who said: Ali said: The camels of the charity (sadaqah) passed by the Messenger of Allah, may Allah bless him and grant him peace. He took a tuft of hair from the back of a camel and said: "I have no more right to this tuft of hair than any man among the Muslims."