From: The Journal of the Islamic Medical Association, Vol.18, Jan-June 1986,
A Scientist's Interpretation of References to Embryology in the Qur'an
Keith L. Moore, Ph.D., F.I.A.C.
The Department of Anatomy, University of Toronto, Canada.
Address all correspondence to:
Keith L. Moore, Ph.D, F.I.A.C., Professor of Anatomy and
Associate Dean Basic Sciences, Faculty of Medicine, University of Toronto, Toronto,
Ontario M55 IAB, Canada
Statements referring to human reproduction and development are scattered throughout the
Qur'an. It is only recently that the scientific meaning of some of these verses has been
appreciated fully. The long delay in interpreting these verses correctly resulted mainly
from inaccurate translations and commentaries and from a lack of awareness of scientific
Interest in explanations of the verses of the Qur'an is not new. People used to ask the
prophet Muhammad all sorts of questions about the meaning of verses referring to
human reproduction. The Apostle's answers form the basis of the Hadith literature.
The translations(*) of the verses from the Qur'an which are
interpreted in this paper were provided by Sheik Abdul Majid Zendani, a Professor
of Islamic Studies in King Abdulaziz University in Jeddah, Saudi Arabia.
- "He makes you in the wombs of your mothers in stages, one after another, in three
veils of darkness."
This statement is from Sura 39:6. We do
not know when it was realized that human beings underwent development in the uterus
(womb), but the first known illustration of a fetus in the uterus was drawn by Leonardo
da Vinci in the 15th century. In the 2nd century A.D., Galen described the
placenta and fetal membranes in his book "On The Formation of the Foetus."
Consequently, doctors in the 7th century A.D. likely knew that the human embryo developed
in the uterus. It is unlikely that they knew that it developed in stages, even though Aristotle
had described the stages of development of the chick embryo in the 4th century B.C. The
realization that the human embryo develops in stages was not discussed and illustrated
until the 15th century.
After the microscope was discovered in the 17th century by Leeuwenhoek
descriptions were made of the early stages of the chick embryo. The staging of human
embryos was not described until the 20th century. Streeter (1941) developed the
first system of staging which has now been replaced by a more accurate system proposed by O'Rahilly
"The three veils of darkness" may refer to: (l) the anterior abdominal wall;
(2) the uterine wall; and (3) the amniochorionic membrane (Fig. 1). Although there are
other interpretations of this statement, the one presented here seems the most logical
from an embryological point of view.
||Figure 1. Drawing of a sagittal section of a
female's abdomen and pelvis showing a fetus in utero. The "veils of darkness"
are: (1) the anterior abdominal wall; (2) the uterine wall, and (3) the amniochorionic
- "Then We placed him as a drop in a place of rest."
- This statement is from Sura 23:13. The
drop or nutfah has been interpreted as the sperm or spermatozoon, but a more
meaningful interpretation would be the zygote which divides to form a blastocyst which is
implanted in the uterus ("a place of rest"). This interpretation is supported by
another verse in the Qur'an which states that "a human being is created from a mixed
drop." The zygote forms by the union of a mixture of the sperm and the ovum
("The mixed drop").
- "Then We made the drop into a leech-like structure."
- This statement is from Sura 23:14. The
word "alaqah" refers to a leech or bloodsucker. This is an appropriate
description of the human embryo from days 7-24 when it clings to the endometrium of the
uterus, in the same way that a leech clings to the skin. Just as the leech derives blood
from the host, the human embryo derives blood from the decidua or pregnant endometrium. It
is remarkable how much the embryo of 23-24 days resembles a leech (Fig. 2). As there were
no microscopes or lenses available in the 7th century, doctors would not have known that
the human embryo had this leech-like appearance. In the early part of the fourth week, the
embryo is just visible to the unaided eye because it is smaller than a kernel of wheat.
||Figure 2. Top, a drawing of a leech or
Below, a drawing of a 24 day-old human embryo. Note the leech-like appearance of the
human embryo at this stage.
||Figure 3. Left, a plasticine model of the
human embryo which has the appearance of chewed flesh.
Right, a drawing of a 28 day-old human embryo showing several bead-like somites which
resemble the teeth marks in the model shown to the left.
- "Then of that leech-like structure, We made a chewed lump."
- This statement is also from Sura 23:14. The
Arabic word "mudghah" means "chewed substance or chewed lump."
Toward the end of the fourth week, the human embryo looks somewhat like a chewed lump of
flesh (Fig. 3). The chewed appearance results from the somites which resemble teeth marks.
The somites represent the beginnings or primordia of the vertebrae.
- "Then We made out of the chewed lump, bones, and clothed the bones in flesh."
- This continuation of Sura 23:14
indicates that out of the chewed lump stage, bones and muscles form. This is in accordance
with embryological development. First the bones form as cartilage models and then the
muscles (flesh) develop around them from the somatic mesoderm.
- "Then We developed out of it another creature."
- This next part of Sura
23:14 implies that the bones and muscles result in the formation of another creature.
This may refer to the human-like embryo that forms by the end of the eighth week. At this
stage it has distinctive human characteristics and possesses the primordia of all the
internal and external organs and parts. After the eighth week, the human embryo is called
a fetus. This may be the new creature to which the verse refers.
- "And He gave you hearing and sight and feeling and understanding."
- This part of Sura
32:9 indicates that the special senses of hearing, seeing, and feeling develop in this
order, which is true. The primordia of the internal ears appear before the beginning of
the eyes, and the brain (the site of understanding) differentiates last.
- "Then out of a piece of chewed flesh, partly formed and partly unformed."
- This part of Sura
22:5 seems to indicate that the embryo is composed of both differentiated and
undifferentiated tissues. For example, when the cartilage bones are differentiated, the
embryonic connective tissue or mesenchyme around them is undifferentiated. It later
differentiates into the muscles and ligaments attached to the bones.
- "And We cause whom We will to rest in the wombs for an appointed term."
- This next part of Sura
22:5 seems to imply that God determines which embryos will remain in the uterus until
full term. It is well known that many embryos abort during the first month of development,
and that only about 30% of zygotes that form, develop into fetuses that survive until
birth. This verse has also been interpreted to mean that God determines whether the embryo
will develop into a boy or girl.
- The interpretation of the verses in the Qur'an referring to human development would not
have been possible in the 7th century A.D., or even a hundred years ago. We can interpret
them now because the science of modern Embryology affords us new understanding.
Undoubtedly there are other verses in the Qur'an related to human development that will be
understood in the future as our knowledge increases.
- (*) Even though the
translations of the verses of the Qur'an in the above paper were provided by Sheik
Abdul Majid Zendani, the links to the translations in this page are from Yusuf Ali
Qur'an Translation (http://qibla.msa.upenn.edu/alim_online/yali_trans/yasurahl.htm)
presented by the Alim Online
since Sheik Zendani's translation is not available on the internet. (MSA-UTK)
- Many thanks to Dr.Jamal Badawi who have brought this article to us.