During sexual intercourse, 250 million sperms are emitted from the male at a time. The sperms undertake an arduous journey in the mother's body until they make it to the ovum. Only a thousand out of 250 million sperms succeed in reaching the ovum.At the end of this five-minute race, the ovum, half the size of a grain of salt, will let only one of the sperms in. That is, the essence of man is not the whole semen, but only a small part of it. This is explained in the Qur'an:
( Does man reckon he will be left uncontrolled (without purpose)? Was he not once a drop of ejected semen? ) (The Qur'an, 75:36-37)
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In the picture to the left, we see semen ejected into the uterus. Only very few sperms out of 250 million sperms emitted from the male can make it to the ovum. The sperm that will fertilise the egg is the only one out of a thousand sperms that have managed to survive. The fact that man is made not from the entire semen, but only a small part of it, is related in the Qur'an with the expression, "a drop of ejected semen".
As we have seen, the Qur'an informs us that man is made not from the entire semen, but only a small part of it. That the particular emphasis in this statement announces a fact only discovered by modern science is evidence that the statement is divine in origin.
Reference : "the miracles of the Quran" by Harun Yahya.