Mukhtasar Bukhari (Abridged) 1397 — If a fly falls in someone’s food

Abu Huraira (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "When a fly falls into the drink of any one of you, he should dip it in, then take it out, for on one of its wings is disease and on the other is cure."