And Muhammad ibn Abdullah ibn Numayr narrated to us: my father narrated to us: Hisham narrated to us, from Abd al-Rahman ibn Sa'd, that Abd al-Rahman ibn Ka'b ibn Malik — or Abdullah ibn Ka'b — informed him, from his father Ka'b, that he told them that the Messenger of Allah, peace and blessings be upon him, used to eat with three fingers, and when he finished, he would lick them.