How often should Muslims cut their nails?
Muslims should cut their nails at least once every 40 days, and most do it weekly. Clipping nails is a sunnah of fitrah (natural hygiene). There's no required day or time, so cut them whenever they start to get long.
The 40-day limit
Clipping the nails is one of the five acts of fitrah the Prophet ﷺ mentioned, together with circumcision, removing pubic hair, plucking armpit hair and trimming the moustache (Sahih al-Bukhari 5889).
Anas ibn Malik said a time limit was set for these: they should not be left for more than forty nights (Sahih Muslim 258). Scholars take this as the outer limit. Leaving nails longer than that without a reason is disliked. Cutting them more often is better, especially if they grow fast or collect dirt.
Is there a best day?
Many Muslims like to cut their nails on Thursday or Friday, as part of getting ready for Jumu'ah. That's a nice habit, but the specific reports linking nail-cutting to Friday are weak, so it isn't a fixed sunnah. Any day is fine.
The same goes for time of day. Some cultures say cutting nails at night is bad luck, but that has no basis in Islam. See Is it okay to cut my nails at night?
One real exception: if you plan to offer a qurbani sacrifice, many scholars say don't cut your nails or hair from the start of Dhul Hijjah until it's done. See Do I have to stop cutting my hair and nails before qurbani?
Any order or method?
There's no authentic hadith that sets a specific finger order. The general sunnah is to start with the right side in good things: Aisha said the Prophet ﷺ liked to begin with the right when putting on shoes, combing his hair and purifying himself (Sahih al-Bukhari 168). So many people start with the right hand.
- Use clippers, scissors or a file; all are fine.
- Toenails count too, on the same 40-day rule.
- You don't have to bury the clippings. Some scholars recommend it, but putting them in the bin is fine.
Long nails, dirt and wudu
Very long nails trap dirt and can make wudu harder. A little everyday dirt under the nails doesn't make wudu invalid, according to many scholars, but keeping them short avoids the question. Acrylics, gel and regular polish are different: they form a layer over the nail and stop water reaching it. See Can I pray with nail polish on?
- Cut your nails at least every 40 days (Sahih Muslim 258).
- Weekly is common and better for hygiene.
- No fixed day; Friday is a habit, not a rule.
- Starting with the right hand follows the general sunnah.
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