﴿ ۞ ٱللَّهُ ٱلَّذِى خَلَقَكُم مِّن ضَعْفٍۢ ثُمَّ جَعَلَ مِنۢ بَعْدِ ضَعْفٍۢ قُوَّةًۭ ثُمَّ جَعَلَ مِنۢ بَعْدِ قُوَّةٍۢ ضَعْفًۭا وَشَيْبَةًۭ ۚ يَخْلُقُ مَا يَشَآءُ ۖ وَهُوَ ٱلْعَلِيمُ ٱلْقَدِيرُ ﴾

“IT IS GOD who creates you [all in a states of weak­ness, and then, after weakness, ordains strength [for you], and then, after [a period of] strength, ordains [old-age] weakness and grey hair. He creates what He wills; and He alone is all-knowing, infinite in His power.”

(Allah is He who shaped you out of weakness) from a weak sperm, (then appointed after weakness strength) a strong, young man, (then, after strength, appointed weakness) old age (and grey hair) after enjoying youth. (He createth what He will) He transforms His created beings as He wills from one state to another. (He is the Knower) of His creation, (the Mighty) He is able to transform them.