AbuSa'eed narrated that the Messenger of Allah (ﷺ) said:
"On oneof the wings of a fly there is a poison and on the other is the cure.If it falls into the food, then dip it into it, for it puts thepoisonfirst and holds back the cure." (ID)
English reference (ID): Vol. 4, Book 31, Hadith 3504 (ID)
Arabic reference (ID): Book 31, Hadith 3633 (ID)