As far as it is known from the history of embryology, little was known about staging and classification of human embryos until the twentieth century. For this reason, the descriptions of the human embryo in the Qur'an cannot be based on scientific knowledge in the seventh century. The only reasonable conclusion is that these descriptions were revealed to Muhammad from Allah. He could not have known such details because he was an unlettered man with absolutely no scientific training. With apologises for the repetition, Galen formulated his theory of four stages of development in AD 150, long before Muhammad.
Some Muslim scholars agree.
There is no doubt that medieval thought appreciated this agreement between the Qur'an and Galen, for Arabic science employed the same Qur'anic terms to describe the Galenic stages. Professor Moore said that he has inserted the appropriate references at the appropriate places in a specialized scientific book. However, he would invite us to make some Islamic additions, citing all the relevant Qur'anic verses and the prophetic ahadeeth, and highlighting their various miraculous aspects, to be incorporated at appropriate places in the book. This was done, and consequently, Professor Moore wrote an introduction to these Islamic additions and the result was this one which you see here before you. On each page that includes facts about the science of embryology, we have cited the Qur'anic verses and Prophetic Ahadeeth which prove the inimitability of the Qur'an and Sunnah.