Sahih Bukhari : Volume 7, Book 71, Number 673:
Narrated Abu Huraira:
Allah's Apostle said, "If a fly falls in the vessel of any of you, let him dip all of it (into the vessel) and then throw it away, for in one of its wings there is a disease and in the other there is healing (antidote for it) i e. the treatment for that disease."
Scientific findings in relation to the fly.
The new buzz on antibiotics (ABC Science)