'Abdullah b. Ka'b reported that his father Ka'b narrated to him that Allah's Messenger (ﷺ) used to eat with three fingers and when he had finished (eating), he licked them.

لا تلتقي أسانيد هذه الأحاديث عند راوٍ واحد، وهي على ١٦ رواة في أعلاها.