(This Life is Very Short)
God is the One who created you weak, then granted you after the weakness strength, then substituted after the strength weakness and gray hair. He creates whatever He wills. He is the Omniscient, the Omnipotent.
اللَّهُ الَّذى خَلَقَكُم مِن ضَعفٍ ثُمَّ جَعَلَ مِن بَعدِ ضَعفٍ قُوَّةً ثُمَّ جَعَلَ مِن بَعدِ قُوَّةٍ ضَعفًا وَشَيبَةً يَخلُقُ ما يَشاءُ وَهُوَ العَليمُ القَديرُ
allahul lazee khalaqa kum min du’fin summa ja’ala mim ba’di du’fin quwwatan summa ja’ala mim ba’di quwwatin du’fanw wa shaibah; yakhluqu maa yashaaa’u wa Huwal ‘Aleemul Qadeer