Allah Subhanahu Wa Ta'ala said:
يٰۤـاَيُّهَا النَّا سُ اِنْ كُنْـتُمْ فِيْ رَيْبٍ مِّنَ الْبَـعْثِ فَاِ نَّـا خَلَقْنٰكُمْ مِّنْ تُرَا بٍ ثُمَّ مِنْ نُّـطْفَةٍ ثُمَّ مِنْ عَلَقَةٍ ثُمَّ مِنْ مُّضْغَةٍ مُّخَلَّقَةٍ وَّغَيْرِ مُخَلَّقَةٍ لِّـنُبَيِّنَ لَـكُمْ ۗ وَنُقِرُّ فِى الْاَ رْحَا مِ مَا نَشَآءُ اِلٰۤى اَجَلٍ مُّسَمًّى ثُمَّ نُخْرِجُكُمْ طِفْلًا ثُمَّ لِتَبْلُغُوْۤا اَشُدَّكُمْ ۚ وَمِنْكُمْ مَّنْ يُّتَوَفّٰى وَمِنْكُمْ مَّنْ يُّرَدُّ اِلٰۤى اَرْذَلِ الْعُمُرِ لِكَيْلَا يَعْلَمَ مِنْۢ بَعْدِ عِلْمٍ شَيْـئًـا ۗ وَتَرَى الْاَ رْضَ هَا مِدَةً فَاِ ذَاۤ اَنْزَلْنَا عَلَيْهَا الْمَآءَ اهْتَزَّتْ وَرَبَتْ وَاَ نْۢبَـتَتْ مِنْ كُلِّ زَوْجٍۢ بَهِيْجٍ
"O People, if you should be in doubt about the Resurrection, then [consider that] indeed, We created you from dust, then from a sperm-drop, then from a clinging clot, and then from a lump of flesh, formed and unformed - that We may show you. And We settle in the wombs whom We will for a specified term, then We bring you out as a child, and then [We develop you] that you may reach your [time of] maturity. And among you is he who is taken in [early] death, and among you is he who is returned to the most decrepit [old] age so that he knows, after [once having] knowledge, nothing. And you see the earth barren, but when We send down upon it rain, it quivers and swells and grows [something] of every beautiful kind."
(QS. Al-Hajj 22: Verse 5)
* Via Qur'an English
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