Narrated Abu Huraira:
I heard Allah's Messenger (ﷺ) saying, "There is healing in black cumin for all diseases except death."
Narrated Khalid bin Sa`d:
We went out and Ghalib bin Abjar was accompanying us. He fell ill on the way and when we arrived at Medina he was still sick. Ibn Abi 'Atiq came to visit him and said to us, "Treat him with black cumin. Take five or seven seeds and crush them (mix the powder with oil) and drop the resulting mixture into both nostrils, for `Aisha has narrated to me that she heard the Prophet (ﷺ) saying, 'This black cumin is healing for all diseases except As-Sam.' Aisha said, 'What is As-Sam?' He said, 'Death."
Reference : Sahih al-Bukhari 5687In-book reference : Book 76, Hadith 10USC-MSA web (English) reference : Vol. 7, Book 71, Hadith 591 (deprecated numbering scheme)
The black cumin has many names, such as nigella, Roman coriander or black cumin, and it has always been known as a kind of spice and has been used since ancient times as a type of treatment for many diseases.
The black cumin contains:
Approximately 21% of its ingredients are protein.
About 38% are carbohydrates.
Approximately 35% of fats and vegetable oils are beneficial essential fatty acids, such as linoleic acid and oleic acid.
Many minerals and vitamins, such as: calcium, potassium, iron, zinc, magnesium, selenium, vitamin A, vitamin B, vitamin B2, niacin, and vitamin C.
The most important components or active ingredients in it are the oils it contains, the most famous of which is nigellone.