مختصر صحيح بخاري
Mukhtasar Sahih Bukhari
Book of Beginning of Creation
If a fly falls in someone’s food or drink, immerse it, for one wing has disease and the other cure.
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."
