A student asked me recently about the hadith on killing geckos. My first answer was a quick one, the kind you give in passing. But she was clearly interested in more than just the headline ruling — she wanted to know what it actually meant, why it existed, and how it fit with everything else Islam teaches about mercy toward animals. So I sat down and went through it as properly as I could, and thought the brief research was worth writing up.
May it be of use and benefit, āmīn.
To summarise:
- The hadith is authentic — the Prophet, ʿalayhi al-ṣalāt wa al-salām, did instruct that the gecko be killed, and called it a fuwaysiq, a “little noxious creature.”
- That instruction is classified by the scholars as recommended, not obligatory. Doing it earns reward; not doing it is not a sin.
- The classical jurists explain the ruling by the gecko’s classification among harmful creatures. In particular, Imām al-Nawawī connects the description fuwaysiq to the five fawāsiq — the creatures which the Prophet ﷺ specifically permitted to be killed even in the Sacred Precinct — and explains that these creatures are distinguished from ordinary creatures by their increased harm and injury.
- This is not the same thing as saying that the gecko is literally one of those five creatures: it isn’t. Rather, the significance lies in the Prophetic use of the same terminology and in the way the classical commentary tradition explains that terminology.
- The story of the gecko blowing upon the fire of Ibrāhīm, peace be upon him, is authentic too, and some narrations explicitly associate it with the command to kill the gecko. But the classical juristic commentary does not generally make the historical act of that particular creature the technical legal ʿillah of the ruling, as far as I know. Imām al-Nawawī instead explains the designation in terms of the creature’s harmful nature.
- None of this sits against Islam’s broader, very real teaching on mercy toward animals. It is a narrow, bounded ruling within that broader ethic, not a departure from it.
- Someone with a genuine aversion to killing the creature is free to simply leave it alone or remove it instead, without sin. (Note: that doesn’t mean you are doing something better! It simply means there isn’t a sin involved.)
- For anyone who wants the fuller picture — the actual texts, how the ruling was reached, and where the Ibrāhīm story fits — that’s below.
POINT 1: WHAT IS THE RULING?
The school of law that I studied the most, the school of the noble Hashimi sharif, Imam al-Shafi’i, makes it clear — killing the gecko is mustaḥabb (recommended).
The word is even visible in the chapter heading under which this material is preserved in Ṣaḥīḥ Muslim:
باب استحباب قتل الوزغ
“Chapter on the recommendation of killing the gecko.”
And Imām al-Nawawī, commenting on this chapter, explains that the Prophet ﷺ commanded its killing, encouraged it and urged it because it is among the harmful creatures.
And mustaḥabb means that doing it earns reward, while leaving it is not sinful.
So a Muslim who sees a gecko on a wall and simply leaves it, or removes it instead, has not committed a sin and has not disobeyed an obligatory command.
Note to non-Shāfiʿī readers: in the Shāfiʿī school, terms such as mustaḥabb, sunnah, faḍīlah and mandūb are generally used for a recommended act: doing it is rewarded, while leaving it is not sinful. Other schools sometimes employ somewhat different terminological classifications.
POINT 2: WHAT TEXTS DOES THE SCHOOL REFER TO WHEN COMING TO THIS RULING?
This shouldn’t be necessary for people to really delve into. And this is the part I actually think matters tremendously — in many ways, more than the ruling itself.
A medical textbook contains real, accurate information about drugs and dosages. Owning it doesn’t make someone qualified to diagnose themselves and write a prescription.
The hadith corpus works in much the same way. It is authoritative, but reading a hadith and deciding for yourself what it means, what legal category it belongs to, what conditions apply to it, or whether it is general or specific is not the same thing as doing fiqh.
A person who can read a pharmacology textbook does not thereby become qualified to prescribe medication. Likewise, a person who can search Ṣaḥīḥ Muslim does not thereby become qualified to derive a legal ruling from an isolated hadith.
So the question isn’t:
“What do I personally take this hadith to mean?”
but:
“What did the qualified scholars of the Sharīʿah, working through this material properly, conclude — and what are the actual limits of that ruling?”
And generally speaking, one can stop there.
But as we live in an age where people just scour the internet and become their own pharmacists, here is a basic summary of four narrations that are usually mentioned:
“The Prophet ﷺ commanded the killing of geckos.”
Ṣaḥīḥ Muslim; Ṣaḥīḥ al-Bukhārī.
“The Messenger of Allah ﷺ commanded the killing of the gecko, and he called it a fuwaysiq.”
Ṣaḥīḥ Muslim.
“Whoever kills a gecko with the first strike has such-and-such reward; whoever kills it on the second strike has less than that; on the third strike, less again.”
Ṣaḥīḥ Muslim.
“…it used to blow on the fire of Ibrāhīm, peace be upon him.”
Ṣaḥīḥ al-Bukhārī.
Fuwaysiq is the diminutive of fāsiq — something that has “gone out,” and, in this context, a noxious or harmful creature.
The same root, f-s-q, appears in a separate, explicit hadith naming five specific creatures the Prophet ﷺ said could be killed even within the Sacred Sanctuary, including by a person in the pilgrim state of iḥrām:
- the snake;
- the pied crow;
- the mouse/rat;
- the biting dog;
- and the kite.
These are the fawāsiq.
The gecko isn’t one of the five by name. But the same terminology is applied to it.
And this is where the classical commentary becomes particularly important.
Imām al-Nawawī explains:
وأما تسميته فُوَيْسِقًا فنظيره الفواسق الخمس التي تقتل في الحل والحرم. وأصل الفسق الخروج، وهذه المذكورات خرجت عن خلق معظم الحشرات ونحوها بزيادة الضرر والأذى.
In substance:
“As for calling it a fuwaysiq, its analogue is the five fawāsiq which may be killed in the lawful territory and the Sacred Precinct. The root of fisq is ‘to go out’, and these creatures have departed from the normal character of most insects and similar creatures through an increase in harm and injury.”
So we should be precise.
We should not say:
“The gecko is one of the five fawāsiq.”
It isn’t.
Nor should we simply say:
“The word fuwaysiq itself is technically the ʿillah.”
Rather, the classical Shāfiʿī commentary connects the Prophetic designation to the creature’s harmful and injurious character, placing it conceptually alongside the fawāsiq.
That is the relevant juristic explanation of the ruling.
POINT 3: WHAT ABOUT THE STORY OF SAYYIDINĀ IBRĀHĪM, ʿALAYHI AL-SALĀM?
As this also seems to come up a lot, it’s important to briefly discuss.
We have already mentioned the report that the gecko “used to blow on the fire of Ibrāhīm,” which is authentically transmitted in Bukhārī.
There are also narrations in which the connection is made more explicitly, with the gecko’s blowing upon the fire being mentioned alongside the instruction to kill it.
So the report should not simply be dismissed as irrelevant. It is authentic, and it is clearly part of the Prophetic material associated with the gecko.
But it is important to distinguish between an associated reason or explanation in a hadith and the technical ʿillah upon which a juristic ruling is constructed.
The classical Shāfiʿī commentary does not say that modern geckos are to be killed because they bear some inherited guilt for what one particular gecko did in the time of Ibrāhīm, peace be upon him.
Rather, Imām al-Nawawī explains the designation fuwaysiq through the creature’s harmfulness, explicitly comparing it with the five fawāsiq and describing those creatures as having departed from the normal character of other creatures through their increased harm and injury.
So the safest formulation is:
The Ibrāhīm narration is authentic and forms part of the Prophetic explanation surrounding the gecko. But the operative juristic reasoning identified in the classical Shāfiʿī commentary is its harmful character, not some notion of inherited culpability from the creature’s ancient ancestor.
One should therefore distinguish:
- the historical report concerning Ibrāhīm;
- the Prophetic description of the gecko;
- the juristic classification of killing it as recommended;
- and the juristic explanation in terms of harmfulness.
They are related, but they are not all the same category of statement.
POINT 4: OUR RELIGION, MERCY, AND ANIMALS
The teachings of the Prophet, ʿalayhi salat wa salam, with regards to animals were genuinely protective, continuously and consistently. The Prophet, ʿalayhi salat wa salam, said that the Divine has prescribed excellence in all things, down to sharpening the blade and sparing an animal unnecessary suffering at the point of slaughter. A woman was described as earning punishment for confining a cat until it died, neither feeding it nor letting it forage. A man was forgiven his sins for giving water to a thirsty dog. The Prophet, ʿalayhi salat wa salam, forbade using any living creature as a target for sport, and forbade mutilation and needless cruelty outright.
Set against that, the gecko ruling is a narrow, bounded ruling within that broader ethic, not a departure from it. It’s a principle pertaining to harm; a harm that geckos are characterised by, and which some very few others are as well, such as rabid dogs and venomous snakes.
Fittingly, given how much of this comes down to gentleness, here is a prayer widely attributed to Nur al-Din Ali Abu al-Hasan al-Shadhuli, Qutb of his age, master of the way:
رَبِّ أَنْتَ الَّذِي بِقُدْرَتِكَ خَلَقْتَنِي، وَبِرَحْمَتِكَ هَدَيْتَنِي، وَبِنِعْمَتِكَ رَبَّيْتَنِي، وَبِلُطْفِكَ غَذَّيْتَنِي، وَبِجَمِيلِ سِتْرِكَ سَتَرْتَنِي، رَبَّنَا وَسِعْتَ كُلَّ شَيْءٍ رَحْمَةً وَعِلْماً، وَقَدْ عَلِمْتَ مَا كَانَ وَمَا يَكُونُ مِنَّا، فَتَدَارَكْنَا بِفَضْلِكَ وَرَحْمَتِكَ، وَحُفَّنَا بِعَفْوِكَ وَمَغْفِرَتِكَ:
“My Lord, it is You who created me by Your power, guided me by Your mercy, raised me by Your favour, nourished me by Your gentleness, and concealed my faults by the beauty of Your veiling. Our Lord, You have encompassed all things in mercy and knowledge, and You already know what has been and what will be of us — so look after us by Your grace and Your mercy, and encompass us with Your pardon and Your forgiveness.”
Amin.
