The process of human development and reproduction as described in the Quran and in the hadith is a mixture of common sense and misinformation. Muhammad’s knowledge of human embryo development was faulty. He said that there were 40-day segments. After the first 40 days, he becomes a clot and then a piece of flesh. But perhaps the most egregious error is Muhammad’s teaching the man’s seed proceeds from his chest (Surah 86:5-7). The Quran which is supposed to be a perfect book provides faulty information about human development and origins.

1. Human development: clay, sperm, congealed blood, bones, flesh
   1. Surah 23:12-14, “Man We did create from a quintessence (of clay); 13 Then We placed him as (a drop of) sperm in a place of rest, firmly fixed; 14 Then We made the sperm into a clot of congealed blood; then of that clot, We made a (foetus) lump; then we made out of that lump bones and clothed the bones with flesh; then we developed out of it another creature. So blessed be Allah, the best to create!
2. Human development, after 40 days in the womb he becomes a clot of thick blood for another 40 days,  then he becomes a piece of flesh for 40 days, then the soul is breathed into the person.
   1. “Allah’s Apostle, the true and truly inspired said, “(as regards your creation), every one of you is collected in the womb of his mother for the first forty days, and then he becomes a clot for an other forty days, and then a piece of flesh for an other forty days. Then Allah sends an angel to write four words: He writes his deeds, time of his death, means of his livelihood, and whether he will be wretched or blessed (in religion). Then the soul is breathed into his body. So a man may do deeds characteristic of the people of the (Hell) Fire, so much so that there is only the distance of a cubit between him and it, and then what has been written (by the angel) surpasses, and so he starts doing deeds characteristic of the people of Paradise and enters Paradise. Similarly, a person may do deeds characteristic of the people of Paradise, so much so that there is only the distance of a cubit between him and it, and then what has been written (by the angel) surpasses, and he starts doing deeds of the people of the (Hell) Fire and enters the (Hell) Fire.” (Sahih Bukhari, Hadith, Volume 4, Book 55, Number #549: Narrated Abdullah: )
   2. “Allah’s Apostle, the true and truly inspired said, “(The matter of the Creation of) a human being is put together in the womb of the mother in forty days, and then he becomes a clot of thick blood for a similar period, and then a piece of flesh for a similar period. Then Allah sends an angel who is ordered to write four things. He is ordered to write down his (i.e. the new creature’s) deeds, his livelihood, his (date of) death, and whether he will be blessed or wretched (in religion). Then the soul is breathed into him. So, a man amongst you may do (good deeds till there is only a cubit between him and Paradise and then what has been written for him decides his behavior and he starts doing (evil) deeds characteristic of the people of the (Hell) Fire. And similarly, a man amongst you may do (evil) deeds till there is only a cubit between him and the (Hell) Fire, and then what has been written for him decides his behavior, and he starts doing deeds characteristic of the people of Paradise.” (Hadith, Volume 4, Book 54, Number #430: Narrated ‘Abdullah bin Mus’ud
3. Stages in womb
   1. Surah 39:6, “He created you (all) from a single person: then created, of like nature, his mate; and he sent down for you eight head of cattle in pairs: He makes you, in the wombs of your mothers, in stages, one after another, in three veils of darkness. such is Allah, your Lord, and Cherisher: to Him belongs (all) dominion. There is no god but He: then how are ye turned away (from your true Centre)?”
4. Stages of human development: dust, sperm, leech-like clot, flesh
   1. Surah 22:5, “O mankind! If ye have a doubt about the Resurrection, (consider) that We created you out of dust, then out of sperm, then out of a leech-like clot, then out of a morsel of flesh, partly formed and partly unformed, in order that We may manifest (our power) to you; and We cause whom We will to rest in the wombs for an appointed term, then do We bring you out as babes, then (foster you) that ye may reach your age of full strength; and some of you are called to die, and some are sent back to the feeblest old age, so that they know nothing after having known (much), and (further), thou seest the earth barren and lifeless, but when We pour down rain on it, it is stirred (to life), it swells, and it puts forth every kind of beautiful growth (in pairs).”
5. Man created from sperm drop
   1. Surah 16:4, “He has created man from a sperm-drop, and behold this same (man) becomes an open disputer!”
   2. Surah 75:37-38, “Was he not a drop of sperm emitted (in lowly form)? 38 Then did he become a leech-like clot; then did (Allah) make and fashion (him) in due proportion.”
6. Sperm comes from the chest area
   1. Surah 86:5-7, “Now let man but think from what he is created! 6. He is created from a drop emitted— 7 Proceeding from between the backbone and the ribs.”