A number of hadiths attribute specific medical advice to Muhammad. Modern apologists sometimes present these statements as evidence of advanced or miraculous knowledge. When examined against contemporary medical understanding, several of the reports contain clear errors or recommendations that are ineffective or potentially harmful. The following review focuses on the most frequently cited examples.
1. The Fly in the Drink
Muhammad is reported to have said that if a fly falls into a drink, one should dip it fully and then remove it, because one wing carries disease and the other carries the cure (Bukhari 3320, Ibn Majah 3505, Abu Dawud 3844).
There is no anatomical or microbiological difference between a fly’s two wings with respect to pathogens or antidotes. Flies can carry antimicrobial compounds on their surfaces, as do many other organisms, but these compounds protect the fly itself and do not neutralise the wide range of human pathogens that flies routinely transport after contact with faeces, carrion, and refuse. Flies are documented vectors for dozens of diseases, including typhoid, cholera, and various forms of dysentery. Laboratory extraction of antimicrobial substances from insects requires controlled chemical processes; simply immersing a contaminated fly in a beverage does not achieve the same result and increases the risk of infection.
2. Honey for Diarrhoea
When a man reported that his brother suffered from loose stools, Muhammad repeatedly prescribed honey. Each time the condition worsened, he insisted the prescription was correct and that “Allah has spoken the truth and your brother’s abdomen has lied” (Bukhari 5716, Muslim 2217).
Honey is high in sugar and can act as a mild laxative. In cases of diarrhoea it often exacerbates fluid loss rather than relieving it. The eventual recovery of the patient is consistent with the natural course of many self-limiting gastrointestinal illnesses and does not demonstrate therapeutic efficacy of the recommended treatment.
3. Black Seed Cures Every Disease
Muhammad stated that black cumin (Nigella sativa) contains a cure for every disease except death (Bukhari 5687–5688).
Black seed possesses documented anti-inflammatory and immunomodulatory properties and may assist with certain conditions. The absolute claim that it heals “all diseases” is contradicted by the existence of genetic disorders, many cancers, viral infections such as HIV, and other pathologies for which no evidence of efficacy exists. Restrictive reinterpretations that reduce the statement to “all diseases it can cure” abandon the plain wording of the report.
4. Water Is Never Impure
When asked about performing ablution from a well into which menstrual rags, dead dogs, and refuse were thrown, Muhammad replied that water is pure and nothing makes it impure (Abu Dawud 66, Nasaai 326–327).
Water contaminated with biological waste can transmit pathogens. Modern public-health standards require treatment or avoidance of such sources. The blanket assertion that water cannot be defiled is inconsistent with basic hygiene.
5. Camel Milk and Urine as Medicine
A group of men who became ill in Medina were instructed to drink camel milk and urine. After recovering they apostatised, killed a shepherd, and stole the camels; they were then subjected to severe corporal punishment (Bukhari 5685, Nasai 306).
Camel urine contains high levels of creatinine and other compounds that can be toxic to humans. Camels are reservoirs for MERS-CoV and other zoonotic pathogens. The World Health Organization advises against the consumption of raw camel milk and urine. Clinical studies of camel urine in cancer patients have shown no therapeutic benefit and occasional infectious complications.
6. Seven Dates Against Poison and Magic
Muhammad claimed that eating seven ʿAjwah dates in the morning would protect against poison and magic for the rest of the day (Bukhari 5768–5779).
No controlled evidence supports this assertion. Muhammad himself is reported to have suffered prolonged effects from poison (Bukhari 4428, 5777) and to have been affected by magic on at least one occasion (Bukhari 6391).
7. Sheep-Tail Fat for Sciatica and Ruqya for Stings
Additional reports recommend melted fat from a sheep’s tail for sciatica (Ibn Majah 3463) and permit ruqya (incantation) for poisonous stings (Bukhari 5736, 5741). Neither recommendation has been validated by modern clinical standards; both remain anecdotal.
Broader Pattern
In several of these cases the advice is attributed directly to divine authority (“Allah has told the truth”). When the prescribed treatment fails or causes harm, the reports either double down on the original claim or introduce unfalsifiable qualifications (e.g., “except at the time of death”). This pattern is characteristic of pre-scientific medical folklore rather than reliable empirical knowledge.
Conclusion
The medical statements examined above do not demonstrate advanced scientific insight. Some are inert, others are actively counterproductive, and a number conflict with established facts of microbiology, toxicology, and clinical medicine. Presenting them as miraculous medical guidance requires either selective reinterpretation or disregard of the plain wording and observable outcomes.
