The Prophet ﷺ said, "When one of you eats, let him lick his fingers, for he does not know in which of them the blessing lies."
عن النبي ﷺ قال: إذا أكل أحدكم فليلعق أصابعه، فإنه لا يدري في أيتهن البركة.
Muslim narrated it in the Book of Drinks (137:2035), from Muhammad bin Hatim, who said, Bahz narrated to us, who said, Wahib narrated to us, who said, Suhayl narrated to us, from his father, from Abu Hurairah, who mentioned it.