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
It is Allah Who created you in a state of weakness; then after weakness He gave you strength, then after strength He made you weak and old. He creates what He pleases. He is All-Knowing, All-Powerful.