As regard the hadith reported by Abdullah (Ibn Mas’ud ) -  he may be blessed by Allah – : Allah’s Messenger ( peace and blessings be upon him ), the  truthful and  truly-inspired (trusted) , said  : Each one one of you  is collected (i.e. constituents of creation are collected together)  in his mother’s [...]

The Holy Qura’n points , in many verses , that the beginning of the progeny of Adam is from nutfah :  ” He has created man from nutfah (a drop of mingled fluid ) ; yet behold !  he is an obvious opponent  ..”   (Surah A-Nahl ; 16 : Ayah 4 )  –” His companion said [...]

        The hadith that describes the the human development in the first forty days  was narrated by  Abdullah Ibn  Mas’ud -  he may be blessed by Allah – , he said :  Allah’s Messenger ( peace and blessings be upon him ), the  truthful and  truly-inspired (trusted) , said  : Each one one of you  [...]

After  the end of the uterine incubation period of the fetus , it becomes able to live outside the uterus without any health problems that could endanger his life . This means that duration of pregnancy has been ended and  indicates coming out of the uterus becomes a must. Allah – the Almighty – Said [...]

A scientific miracle in the Qura’n or in the Sunnah , in general , means that a fact in a particular science was well documented in these scriptures since in the 7th century AD, and it was impossible at that time to be known . Modern experimental embryology is a fairly recent science which has its beginnings with the invention of the microscope in the seventeenth century. This science includes all topics concerning with development of the embryo .

The Qura’n and the hadiths (Sunnah) that were recorded centuries before modern science, are consistent with the principles of human genetics. Certainly, specific scientific knowledge regarding these topics was not available in the 7th century , when the Qura’n and Hadith were written . Several citations in the Qur’an and the Sunnah are consistent with the existence of different genetic mechanisms, that are now known to be responsible for normal and abnormal human development.

The developmental stages in the Qur’an , accurately described the events that occur during the various stages of development, in their chronological order and depict the morphological changes in each stage. In fact , the Qur’anic system for classifying human development is amazing since it was recorded in the 7th century A.D. Prophet Mohammad ( peace and blessings be upon him ), being an illiterate man with absolutely no scientific training, could not know in the 7th century all these scientific facts , most of them were only discovered in the 20th century.

During the early part of the 20th century , Franklin P. Mall , the most known scientist in the field of staging human embryos , at the Department of Embryology at the Carnegie Institute of Washington , arranged 266 human embryos in a series of stages. Before this date , there was only a little about classification and staging of human embryo . Streeter , twenty-eight years after Mall , classified the developing human embryos into 23 stages , which he called developmental horizons. These stages were based on the external and / or internal morphological development of the embryo, and were not directly dependent on either age or size. The first stage, is the earliest stage (soon after fertilization), and higher stages reflect older and larger embryos . These stages were named Carnegie stages , after the famous Institute at which Mall began collecting and classifying embryos.