Key takeaway
Quran 16:66 says: "We give you drink from what is in their bellies - between excretion and blood - pure milk, palatable to drinkers." Physiology confirms that milk is produced in the mammary glands from nutrients that were absorbed from digested food into the bloodstream. It is made from the products of digestion, carried by the blood, yet is clean and wholesome.
The verse
وَإِنَّ لَكُمْ فِى ٱلْأَنْعَـٰمِ لَعِبْرَةً ۖ نُّسْقِيكُم مِّمَّا فِى بُطُونِهِۦ مِنۢ بَيْنِ فَرْثٍ وَدَمٍ لَّبَنًا خَالِصًا سَآئِغًا لِّلشَّـٰرِبِينَ ٦٦
And indeed, for you in grazing livestock is a lesson. We give you drink from what is in their bellies - between excretion and blood - pure milk, palatable to drinkers.
Key Arabic terms
| Arabic | Transliteration | Meaning |
|---|---|---|
| فَرْثٍ | farth | the contents of the stomach and intestines, digested food and waste |
| لَّبَنًا خَالِصًا | labanan khāliṣan | pure milk |
| سَآئِغًا | sāʾighan | pleasant and easy to swallow |
The verse
The verse invites reflection on cattle: from what is in their bellies, "from between" digested matter and blood, comes something entirely different, pure and pleasant milk. Classical commentators explained that food is digested, its essence goes into the blood, and from the blood milk is produced, while waste is separated out.
Physiology
In mammals, digested nutrients are absorbed through the gut wall into the bloodstream. Blood carries them to the mammary glands, where specialized cells take up sugars, amino acids and fats and synthesize milk. Large volumes of blood flow through the udder of a dairy cow to produce each liter of milk.
Balanced assessment
Moderate A reasonable, accurate correspondence; the words have other valid meanings or the fact was partly known before.
The verse's description, milk arising from what lies between digestion and blood, is physiologically sound. Its emphasis is on wonder and gratitude for a pure food produced from such sources.
Frequently asked questions
What does the Quran say about milk?
Quran 16:66 says Allah gives us "pure milk" from livestock, produced "between excretion and blood." Milk is made in the mammary glands from digested nutrients carried by the blood.
References
Quran
- Quran 16:66, Saheeh International translation (Quran.com)
Science & history
Classical exegesis is summarized from the standard commentaries (e.g. al-Ṭabarī, Ibn Kathīr, al-Qurṭubī). See our methodology.
Cite this page
Quran Scientific Miracles. “How Milk Is Produced.” https://quranscientificmiracles.com/topics/milk-production/ (reviewed 2026-10-20).