It wasnarrated from Ibn 'Abbas that the Prophet (ﷺ) said:
"Whenoneof you eats food, let him not wipe his hand until he has licked itorhas someone else to lick it." (IT)
English reference (IT): Vol. 4, Book 29, Hadith 3269 (IT)
Arabic reference (IT): Book 29, Hadith 3393 (IT)