The short answer
The miswak (siwak) is a stick for cleaning the teeth and mouth, which the Prophet Muhammad, peace be upon him, used. Sahih al-Bukhari 245 reports that he cleaned his mouth with it when he got up at night. On miswak benefits for the teeth, a small 2024 trial in Healthcare found miswak alone did not significantly reduce plaque, while toothbrushing did.
How the reports describe using a miswak
The reports name four occasions. None of them gives a brushing technique, so this list does not describe how to brush.
- Before the prayer. Abu Hurayrah, may Allah be pleased with him, reports the Prophet Muhammad, peace be upon him, saying that had it not been hard on the believers, he would have ordered the miswak with every prayer (source 2). Sahih al-Bukhari 887 has the words "my community or people" (source 1). The words describe what he would have ordered. They do not make it required.
- On getting up at night. Hudhayfah, may Allah be pleased with him, reports that when the Prophet got up at night, he cleaned his mouth with the miswak (source 3).
- On entering the home. Miqdam ibn Shurayh reports from his father Shurayh, may Allah be pleased with him, that he asked 'Aisha, may Allah be pleased with her, what the Prophet began with when he entered his house. She said: with the miswak (source 4).
- In the Prophet's own words. 'Aisha reports the Prophet saying that the miswak purifies the mouth and pleases the Lord (source 5).
The hadith in Arabic
Each Arabic text below is copied from its source record. The English under it is a plain rendering for reading, not a published translation. The sources list gives each grading and its grader.
Sunan an-Nasa'i 5
السِّوَاكُ مَطْهَرَةٌ لِلْفَمِ مَرْضَاةٌ لِلرَّبِّ
The miswak purifies the mouth and pleases the Lord.
5AuthenticSunan an-Nasa'i 5
Sahih al-Bukhari 887
لَوْلاَ أَنْ أَشُقَّ عَلَى أُمَّتِي ـ أَوْ عَلَى النَّاسِ ـ لأَمَرْتُهُمْ بِالسِّوَاكِ مَعَ كُلِّ صَلاَةٍ
Had it not been hard on my community, or on people, I would have ordered them to use the miswak with every prayer.
1AuthenticSahih al-Bukhari 887
Sahih Muslim 252
لَوْلاَ أَنْ أَشُقَّ عَلَى الْمُؤْمِنِينَ ـ وَفِي حَدِيثِ زُهَيْرٍ عَلَى أُمَّتِي ـ لأَمَرْتُهُمْ بِالسِّوَاكِ عِنْدَ كُلِّ صَلاَةٍ
Had it not been hard on the believers (in Zuhayr's version: on my community), I would have ordered them to use the miswak at every prayer.
2AuthenticSahih Muslim 252
Sahih Muslim 252 has two wordings in its transmission: the main line reads "the believers", and Zuhayr's version reads "my community". The Arabic above keeps Muslim's own note of that difference between the dashes; the main line reads "the believers".
Sahih al-Bukhari 245
كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا قَامَ مِنَ اللَّيْلِ يَشُوصُ فَاهُ بِالسِّوَاكِ
When the Prophet got up at night, he would clean his mouth with the miswak.
3AuthenticSahih al-Bukhari 245
Sahih Muslim 253a
سَأَلْتُ عَائِشَةَ قُلْتُ بِأَىِّ شَىْءٍ كَانَ يَبْدَأُ النَّبِيُّ صلى الله عليه وسلم إِذَا دَخَلَ بَيْتَهُ قَالَتْ بِالسِّوَاكِ
I asked 'Aisha what the Prophet began with when he entered his house. She said: with the miswak.
4AuthenticSahih Muslim 253a
A household report, not a rule
Sunan Abi Dawud 52
كَانَ نَبِيُّ اللَّهِ صلى الله عليه وسلم يَسْتَاكُ فَيُعْطِينِي السِّوَاكَ لأَغْسِلَهُ فَأَبْدَأُ بِهِ فَأَسْتَاكُ ثُمَّ أَغْسِلُهُ وَأَدْفَعُهُ إِلَيْهِ
The Messenger of Allah used the miswak and gave it to me to wash. I would begin with it, use it, wash it and hand it back to him.
6AuthenticSunan Abi Dawud 52
'Aisha, may Allah be pleased with her, describes a practice in her own household (source 6). The report describes what happened there. It makes no hygiene rule and does not recommend washing or sharing a miswak. This page does not use it as evidence about prayer or wudu.
What did a 2024 study find?
Abdellatif and colleagues published a small trial in Healthcare in 2024 (source 7). It included 60 women aged 18 to 21, split into two groups of 30 for two weeks. One group used a miswak alone. The other used a soft toothbrush with a toothpaste containing 1,450 ppm fluoride.
For plaque, the miswak group showed no significant change (p=0.58), while toothbrushing did (p=0.007). The difference between the two groups was not significant (p=0.08). Gingival (gum) scores rose in the miswak group (p less than 0.001), and the difference between the groups on that measure was significant (p=0.001).
The authors suggest that aggressive use may explain the rise in gum scores. That is a possibility they raise, not a finding.
This is one small trial, over two weeks, in one age group of women. It does not show that miswak whitens teeth, treats gum disease or any other illness, is safe over the long term, or can replace brushing with fluoride toothpaste. The paper is the place to check the details.
Not medical advice
The reports and the 2024 study explained on this page are for reading only. Nothing here is medical or dental advice, or a statement of what is right for your teeth, gums or health. One small trial is not settled evidence.
For oral care, a dentist is the person to ask. Nothing on this page recommends a miswak, a toothbrush or any toothpaste.
Miswak is often described as a simple habit with many claims. Reading the reports on its use, and what they do and do not say, made the picture clearer.
Questions people ask
What is a miswak?
A miswak, also written siwak, is a stick for cleaning the teeth and mouth. The reports use the word siwak. In Sahih al-Bukhari 245, Hudhayfah, may Allah be pleased with him, reports that the Prophet Muhammad, peace be upon him, cleaned his mouth with it when he got up at night. The reports do not describe what the stick is made from.
Is using a miswak required before prayer?
The reports do not make it required. In Sahih Muslim 252, Abu Hurayrah, may Allah be pleased with him, reports that the Prophet Muhammad, peace be upon him, said that had it not been hard on the believers, he would have ordered the miswak with every prayer. Sahih al-Bukhari 887 has the same report with the words my community or people. Those words describe what he would have ordered. For a ruling on prayer, ask a scholar you trust.
Is a miswak better than a toothbrush?
One small 2024 trial does not show that. Sixty women aged 18 to 21 used either a miswak alone or a soft toothbrush with 1,450 ppm fluoride toothpaste for two weeks. Plaque changed significantly only in the toothbrush group, and gum scores rose in the miswak group. The trial also did not show that the miswak matched brushing with fluoride toothpaste. A dentist is the person to ask about oral care.
Does a miswak whiten teeth?
This page makes no claim that it does. The hadith do not mention the colour of teeth, and the 2024 trial did not measure whitening. A dentist can advise on tooth colour and on oral care.
Can a miswak treat gum disease?
The reports do not say so, and the 2024 trial does not show it. In that trial, gum scores rose in the miswak group. For gum problems, see a dentist.
Can you use a miswak while fasting?
The reports on this page do not address fasting, so they cannot answer that question. For a ruling on using a miswak while fasting, ask a scholar you trust.
Sources
Every claim here comes from one of these. Each hadith number and Arabic text was checked on 29 October 2026 against the OpenITI copy of the Shamela edition of its collection. The study figures were checked against the paper's full text on Europe PMC on 29 October 2026. Gradings are reported with their graders; we do not grade hadith ourselves.
- 1
Abu Hurayrah, may Allah be pleased with him, reports the Prophet Muhammad, peace be upon him, saying that had it not been hard on his community, or on people, he would have ordered them to use the miswak with every prayer.
Authentic: in Sahih al-Bukhari
- 2
Abu Hurayrah, may Allah be pleased with him, reports the Prophet Muhammad, peace be upon him, saying that had it not been hard on the believers, he would have ordered them to use the miswak at every prayer.
Authentic: in Sahih Muslim
- 3
Hudhayfah, may Allah be pleased with him, reports that when the Prophet Muhammad, peace be upon him, got up at night, he would clean his mouth with the miswak.
Authentic: in Sahih al-Bukhari
- 4
Miqdam ibn Shurayh reports from his father Shurayh that he asked 'Aisha, may Allah be pleased with her, what the Prophet Muhammad, peace be upon him, began with when he entered his house, and she said: with the miswak.
Authentic: in Sahih Muslim
- 5
'Aisha, may Allah be pleased with her, reports the Prophet Muhammad, peace be upon him, saying that the siwak (miswak) purifies the mouth and pleases the Lord.
Authentic: Sahih (Darussalam edition); Sahih (Al-Albani)
- 6
'Aisha, may Allah be pleased with her, reports that the Messenger of Allah used the miswak and then gave it to her to wash; she would begin with it, use it, wash it and hand it back to him.
Authentic: Hasan (Al-Albani); Jayyid (Ibn al-Mulaqqin)
- 7
Abdellatif and colleagues (2024) ran a small trial of 60 women aged 18 to 21, in two groups of 30 over two weeks, comparing miswak use alone with a soft toothbrush and 1,450 ppm fluoride toothpaste. Plaque did not change significantly within the miswak group, it did change with toothbrushing, and the difference between the groups for plaque was not significant. Gingival (gum) scores rose in the miswak group, and the difference between the groups on this measure was significant. The authors suggest aggressive use as a possible explanation for the gum result, which they do not establish.
Abdellatif et al., Healthcare 2024, 12(21), 2150 Full text read on Europe PMC (PMC11545077) on 29 October 2026.
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For your own situation, ask a scholar you trust. For your health, speak to your GP or another qualified health professional.
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