A common objection claims that Quran 86:5-7 makes a false biological statement by saying that semen is produced "between the backbone and the ribs." The sound answer is not to deny that the verse is about reproductive fluid. It is. The error is to replace the Quranic wording with a narrower claim that the verse does not make: that bones manufacture semen.
The verse and the objection
فَلْيَنظُرِ الْإِنسَانُ مِمَّ خُلِقَ * خُلِقَ مِن مَّاءٍ دَافِقٍ * يَخْرُجُ مِن بَيْنِ الصُّلْبِ وَالتَّرَائِبِ
So let the human being consider from what he was created. He was created from a gushing fluid, which emerges from between the sulb and the taraib.
Quran 86:5-7
The critic usually reads this as: "Male semen is manufactured in the backbone or rib area." Modern anatomy is then invoked: sperm cells are formed in the testes, and much of the fluid volume of semen is added by the seminal vesicles, prostate, and other glands. That anatomy is correct. But the critic's paraphrase is not the Quran's wording.
The Arabic expression is about reproductive fluid, not bone tissue
The verse says ma dafiq (ماء دافق) - a gushing or forcefully emitted fluid. Classical commentators commonly identified this with mani, because the passage is about human creation. This should be conceded plainly. The verse is not speaking about an unrelated fluid.
Elsewhere the Quran uses the word mani explicitly:
Was he not a drop from semen emitted?
Quran 75:37
So the careful point is not that Quran 86:5-7 has no connection to semen or reproductive fluid. The careful point is that it does not say: "semen is produced inside the backbone" or "ribs manufacture sperm." It uses ordinary Arabic language of origin and emergence, not a technical description of glands and cells.
"From between" does not mean "produced by the bones"
The phrase min bayn means "from between" or "from amid." By itself, it does not mean that the two things named are the producing organs. The Quran uses a similar construction when describing milk:
... from between excrement and blood, pure milk, palatable to drinkers.
Quran 16:66
No one understands this to mean that excrement and blood are milk-producing glands. The phrase points to Allah bringing something forth from within a hidden bodily process, without making the named substances into manufacturing organs.
Likewise, sulb can mean the back, backbone, or loins, and it is used in Arabic for lineage and procreative origin. The Quran itself says:
... the wives of your sons who are from your own loins...
Quran 4:23
No Arabic reader takes this to mean that sons are manufactured by vertebrae. It is a normal expression connected to descent and procreation.
The classical tafsir is broader than the objection admits
The early commentators did not reduce the verse to the critic's paraphrase. They discussed the meanings of sulb and taraib and recorded more than one explanation. These are tafsir reports, not Prophetic hadith requiring one single hadith grading; the argument here does not depend on declaring every individual chain sahih. The point is that the early linguistic and exegetical discussion was broader than "male semen is made in rib bones."
1. The man's sulb and the woman's taraib
Al-Tabari, al-Baghawi, Ibn Kathir, and al-Qurtubi mention the explanation that al-sulb refers to the man's back or loins, while al-taraib refers to the woman's chest or necklace area. Ibn Kathir cites reports to this effect from Ibn Abbas and other early authorities.
On this reading, the verse is not making a male-only claim about a single organ in the chest. It points to human creation through the reproductive contribution connected with both parents. This is consistent with the Quranic statement:
Indeed, We created the human being from a mixed drop...
Quran 76:2
Authentic hadiths in Sahih al-Bukhari and Sahih Muslim also mention a woman's "water" in discussions of ghusl and resemblance. This does not require turning the woman's chest bones into glands; it shows that revelation did not reduce human creation to male semen alone.
2. A bodily region reading
Other explanations treat the wording as referring to the body from the back or loins to the front chest area. The word taraib is not identical to the simple English word "ribs." Classical works mention meanings such as the place of the necklace, the upper chest, the area between the breasts, and the collarbone or upper rib area.
Even on this reading, the verse is not saying that bones are glands. It gives a broad, non-technical description connected to the body's hidden reproductive origin and emission. It should not be inflated into a detailed map of spermatogenesis, the prostate, or the seminal vesicles.
What is "emerging"?
The verb yakhruj most naturally refers back to the nearest noun, ma dafiq - the gushing fluid. A weak defense sometimes claims that it refers instead to the human being himself, but that is not the strongest grammatical reading. The fluid is what emerges.
However, "emerges" is not the same as "is manufactured in." The final visible exit point of semen was obvious to every hearer; the verse is speaking about the hidden origin and reproductive context of the fluid, not naming the testes, prostate, seminal vesicles, urethra, or any bone as a production site.
A note on modern embryology
Some modern writers note that the gonads first develop high on the posterior abdominal wall and later descend, while their blood vessels, lymphatic drainage, and nerves retain connections to that higher region. This may be mentioned as a possible reflection, but it should not be presented as the sole or necessary meaning of the verse, nor as the main basis of the answer. The objection already fails because it forces a precise anatomical claim onto words that do not state it.
What the verse does not say
Read carefully, the verse does not say:
- that sperm cells are produced inside the backbone;
- that semen is manufactured by the ribs;
- that bones are reproductive glands;
- that the word taraib simply equals the modern anatomical term "ribs" in every context; or
- that the male body alone is the whole explanation of human creation.
Conclusion
The objection depends on replacing the verse with a narrower statement: "semen is produced in the backbone and ribs." The Quran does not say that. It speaks of a ma dafiq, an emitted reproductive fluid, and uses the terms sulb and taraib, whose meanings were discussed by the classical commentators. Some explained the phrase through the father and mother, while others described a bodily region. None of these readings requires the false claim that bones manufacture semen.
For a fuller treatment of the linguistics, classical tafsir, and related discussions, see our in-depth topic Humans Created Between the Backbone and Ribs? and the related topics below.