It wasnarrated from Jabir that the Messenger of Allah (ﷺ) said:
"If amorsel falls from the hand of anyone of you, let him wipe offwhatever dirt that is on it and eat it." (RU)
English reference (RU): Vol. 4, Book 29, Hadith 3279 (RU)
Arabic reference (RU): Book 29, Hadith 3404 (RU)