Wings of a Fly (Golden Words of Allah – Ep 74)
If a fly falls into the drink of anyone, he should immerse it completely and then remove it, for on one of its wings is disease and on the other is cure. (Sahih al-Bukhari, Kitāb al-Ṭibb)
By Abdullahi Yusuf
In the name of Allah, the Beneficent, the Merciful. All perfect praise is due to Allah, may He be glorified and exalted, the Lord of the Worlds. We bear witness that there is none worthy of worship but Allah, and Muhammad (pbuh), is His slave and final Messenger.
Among the narrations that have attracted curiosity is the well-known hadith in which the Prophet (peace be upon him) instructed that if a fly falls into one’s drink, it should be fully immersed and then removed, for “on one of its wings is disease and on the other is cure.” The hadith appears in Sahih al-Bukhari and comes through several supporting narrations in Abu Dawud and other collections. Because modern readers often approach such texts through a scientific lens, the narration has been the subject of constant debate. Yet when explored calmly and within its own context, it reveals far more subtlety and wisdom than first impressions suggest.
From a modern microbiological perspective, research has shown that flies indeed carry a mix of organisms on their bodies. Some are harmful, but others such as bacteriophages, which naturally attack harmful bacteria, are strikingly consistent with what classical scholars assumed long before microscopes existed. The hadith does not suggest that a drink becomes sterile or magically safe; it simply points out that the fly carries opposing properties on its wings, and that immersing it neutralizes the imbalance produced when only one wing touches the liquid.
The Prophet (pbuh) spoke to a community that lived in an environment where resources were limited and drinks were precious. People could not afford to discard their food and water over a single contamination that could be remedied. It was practical guidance, not a commandment; permissive rather than compulsory. If one chooses to discard the drink today, there is no sin. The hadith simply offers an option for the one who does not wish to waste Allah’s provision.
Abu Hurayrah (RA) narrated a similar version where the Prophet (pbuh) added that the fly “protects itself with the wing that carries the disease,” hence the need to immerse it.
Some narrations also mention “antidote” (دَواء) or “healing” (شفاء), showing consistency across multiple chains.
The narration also carries a subtle spiritual tone. It gently sends a reminder to a believer that divine knowledge is not bound by the limitations of human observation. The Qur’an describes the Prophet of Allah as one who teaches “what you did not know,” and many of his teachings are revealed long before human science begins to articulate the mechanisms behind them. Humility before revelation is not the same as rejecting reason; rather, it means understanding that reason itself has limits and horizons it cannot yet see.
And Allah knows best.
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