يَا أَيُّهَا النَّاسُ إِن كُنتُمْ فِي رَيْبٍ مِّنَ الْبَعْثِ فَإِنَّا خَلَقْنَاكُم مِّن تُرَابٍ ثُمَّ مِن نُّطْفَةٍ ثُمَّ مِنْ عَلَقَةٍ ثُمَّ مِن مُّضْغَةٍ مُّخَلَّقَةٍ وَغَيْرِ مُخَلَّقَةٍ لِّنُبَيِّنَ لَكُمْ ۚ وَنُقِرُّ فِي الْأَرْحَامِ مَا نَشَاءُ إِلَىٰ أَجَلٍ مُّسَمًّى ثُمَّ نُخْرِجُكُمْ طِفْلًا ثُمَّ لِتَبْلُغُوا أَشُدَّكُمْ ۖ وَمِنكُم مَّن يُتَوَفَّىٰ وَمِنكُم مَّن يُرَدُّ إِلَىٰ أَرْذَلِ الْعُمُرِ لِكَيْلَا يَعْلَمَ مِن بَعْدِ عِلْمٍ شَيْئًا ۚ وَتَرَى الْأَرْضَ هَامِدَةً فَإِذَا أَنزَلْنَا عَلَيْهَا الْمَاءَ اهْتَزَّتْ وَرَبَتْ وَأَنبَتَتْ مِن كُلِّ زَوْجٍ بَهِيجٍ (5)
(22:5) O people, if you have any doubt about Life after death, you should know that We first created you of clay, then of a sperm-drop *5 then of a clot of blood, then of a lump of flesh, shaped or shapeless. *6 ( We are telling you this) so that We may make the reality plain to you. And We make those (sperm drops), which We will, remain in the wombs for a fixed period, then We bring you forth as a child; then (We nourish you) so that you may attain to your full youth. And there may be among you one who is recalled earlier and one who is returned to the most abject age so that he should know nothing even after knowing all he could. *7 And you see the land lying dry and barren, but as soon as We send down rain water upon it, it stirs (to life), and swells and brings forth every kind of luxuriant vegetation.
*5) "..... created you .....sperm-drop": The first man Adam was created directly from clay and after him the process of procreation started by means of sperm-drop. This has been stated in XXXII: 7-8 as well. It may also mean that man is created from sperm-drop but his body is made of those elements which are all available in the earth.
*6) This refers to the different stages of development of the child in the womb of its mother. This description is based on observation and not on scientific research, and there was no need for it for the purpose for which reference to this has been made here.
*7) That is, "In old age man is again reverted to the same condition in which he was in childhood. He loses his senses and knows little or nothing like a child".