Ar-Rûm 30:54
۞ اللَّهُ الَّذِي خَلَقَكُم مِّن ضَعْفٍ ثُمَّ جَعَلَ مِن بَعْدِ ضَعْفٍ قُوَّةً ثُمَّ جَعَلَ مِن بَعْدِ قُوَّةٍ ضَعْفًا وَشَيْبَةً ۚ يَخْلُقُ مَا يَشَاءُ ۖ وَهُوَ الْعَلِيمُ الْقَدِيرُ ٥٤
Allahu allathee khalaqakum min daAAfin thumma jaAAala min baAAdi daAAfin quwwatan thumma jaAAala min baAAdi quwwatin daAAfan washaybatan yakhluqu ma yashao wahuwa alAAaleemu alqadeeru
Allah is the One Who created you from a weak thing (i.e., a sperm drop). Then after weakness He generated strength (of youth). Then after strength He produced debility and senility. He creates what He wills, and He is All-Knowing, All-Powerful. (30:54)
The Different Stages of Man
Here Allah points out how man passes through different stages of creation, one phase after another. He is originally created from dust, then from a Nutfah, then from a clot, then from a lump of flesh. Then he becomes bones, then the bones are clothed with flesh, then the soul is breathed into him. Then he emerges from his mother's womb, weak and thin and powerless. Then he grows up little by little, until he becomes a child, then he reaches the stage of puberty, then he becomes a young man, which is strength after weakness. Then he starts to get older, reaching middle age, then old age and senility, weakness after strength, so he loses his resolve, power of movement and ability to fight, his hair turns grey and his characteristics, both inward and outward, begin to change. Allah says:
ثُمَّ جَعَلَ مِن بَعْدِ قُوَّةٍ ضَعْفاً وَشَيْبَةً يَخْلُقُ مَا يَشَآءُ
(then after strength gave (you) weakness and grey hair. He creates what He wills.) He does whatsoever He wills and controls His servants in whatever way He wants.
وَهُوَ الْعَلِيمُ الْقَدِيرُ
(And He is the All-Knowing, the All-Powerful.)