The Messenger of Allah ﷺ said, "When a morsel of food falls from one of your hands, let him wipe off whatever harm has come upon it and eat it, and not leave it for Satan. And let him not wipe his hand with a napkin until he has licked his fingers, for he does not know in which part of his food the blessing lies."
حدثنا أبو أحمد أخبرنا سفيان عن أبي الزبير
قال رسول الله ﷺ إذا سقطت اللقمة من يد أحدكم فليمط ما كان عليها من الأذى ولا يدعها للشيطان ولا يمسح يده بالمنديل وليلعق أصابعه فإنه لا يدري في أي طعامه البركة