Qur’an 86:5–7 tells man to consider what he was created from: a “spurting” or “gushing” fluid that comes from “between the backbone and the ribs,” or, depending on the translation, from between the sulb and the tarāʾib. This passage has become one of the clearest examples used by critics of Islam because the wording appears to place reproductive fluid in the wrong part of the body.
The problem is simple: human reproductive fluid does not originate between the backbone and ribs. Sperm are produced in the testes. They mature in the epididymis and travel through the vas deferens. Most of the fluid volume of semen comes from the seminal vesicles and prostate. These structures are part of the pelvic reproductive system, not the ribcage or upper torso.
Muslim apologists often respond by saying that sulb can mean “loins” rather than strictly “backbone,” and that tarāʾib can refer to the chest, breastbones, or the woman’s body. But this does not really solve the issue. Even if sulb is softened into “loins,” the verse still pairs it with tarāʾib, a term commonly associated with the ribs, chest, or breastbone area. And if the explanation is shifted to “the man’s fluid and the woman’s fluid,” the difficulty remains: the female reproductive organs are also located in the pelvis, not the ribcage.
This is why the apologetic explanations often feel like rescue attempts rather than natural readings. The text sounds anatomical. Classical tafsir often treated it as referring to real procreative fluid. Modern anatomy places the relevant organs somewhere else. That is the controversy.
Some Muslim interpreters argue that the verse refers to embryology, claiming that the reproductive organs begin development higher in the embryo before later descending. But this explanation is weak. Qur’an 86:6–7 is not describing embryonic organ migration. It speaks of a gushing fluid — something emitted — not the developmental origin of the gonads. The embryology explanation appears to import modern knowledge into the text after the problem has already been noticed.
This matters because Islam frequently presents the Qur’an as a uniquely preserved and miraculous revelation from God. Many Muslim apologists also claim that the Qur’an contains scientific knowledge that could not have been known in the seventh century. But Qur’an 86:6–7 points in the opposite direction. Rather than sounding like divine anatomical precision, the passage sounds like ancient pre-modern language about human generation.
From an Orthodox Christian perspective, this is not a trivial point. Christianity does not require us to pretend difficult texts are easy, nor does it build its truth claims on strained scientific reinterpretations. The Orthodox faith is grounded in the incarnation, death, resurrection, apostolic witness, liturgical continuity, and the life of the Church — not in retrofitting vague ancient phrases into modern biology.
The controversy over Qur’an 86:6–7 therefore exposes a deeper issue: when a text claimed to be the direct, perfect speech of God appears to describe human reproduction inaccurately, later harmonizations are not enough. A reader is justified in asking whether the passage reflects divine revelation or the ordinary biological assumptions of its historical environment.
In the end, the problem remains straightforward. Qur’an 86:6–7 describes man as created from a spurting fluid that emerges from between the sulb and tarāʾib. Classical interpretation often connects this with male and female generative fluid. Modern anatomy places sperm production and semen formation in the reproductive organs of the pelvis. That mismatch is why this remains one of the strongest and simplest anatomical objections to the Qur’an’s scientific credibility.
Qur’an 86:6–7, Quran.com
https://quran.com/en/at-tariq/6-7
Quranic Arabic Corpus, Qur’an 86 word-by-word / translation tools
https://corpus.quran.com/translation.jsp?chapter=86&verse=6
https://corpus.quran.com/wordbyword.jsp?chapter=86
Quran.com, Ma’arif al-Qur’an tafsir on 86:6–7
https://quran.com/86:7/tafsirs/en-tafsir-maarif-ul-quran
IslamQA, “Commentary on the verse ‘He is created from a water gushing forth, Proceeding from between the back-bone and the ribs’”
https://islamqa.info/en/answers/118879/commentary-on-the-verse-he-is-created-from-a-water-gushing-forth-proceeding-from-between-the-back-bone-and-the-ribs-at-taariq-866-7
QuranX, tafsirs collected for Qur’an 86:7
https://quranx.com/Tafsirs/86.7
MedlinePlus, “Sperm release pathway”
https://medlineplus.gov/ency/anatomyvideos/000121.htm
MedlinePlus, “Pathway of sperm”
https://medlineplus.gov/ency/imagepages/19073.htm
Merck Manual, “Structure of the Male Reproductive System”
https://www.merckmanuals.com/home/men-s-health/biology-of-the-male-reproductive-system/structure-of-the-male-reproductive-system
Cleveland Clinic, “Semen: Fluid, Production, Storage & Composition”
https://my.clevelandclinic.org/health/body/semen
StatPearls / NCBI Bookshelf, “Embryology, Genitourinary”
https://www.ncbi.nlm.nih.gov/books/NBK559309/