Jabir reported from Allah's Messenger. (ﷺ) about mentioning the licking (of fingers) and the (falling of) the mouthful.
Sahih Muslim Book 36, Hadith 179
← Previous Hadith This hadith is reported on the authority of A'mash with the same chain of transmitters but with a slight variation of words but no mention is made of the first part of the hadith, i. e. the Satan is present with any one of you.

Sahih Muslim Book 36, Hadith 178 Next Hadith → When any one of you drops a mouthful he should remove anything filthy from it and then eat it, and should not leave it for the Satan. He also commanded us that we should wipe the dish saying: You do not know in what portion of your food the blessing lies.

Sahih Muslim Book 36, Hadith 180