Jabir told that he heard the Prophet (ﷺ) say, “The devil is present with one of you in everything he does, even being present when he is at food; so if any of you drops a mouthful he should wipe away anything injurious on it and eat it and not leave it for the devil; and when he finishes he should lick his fingers, for he does not know in what part of the food the blessing lies.” Muslim transmitted it.