it is allah who created you from weakness then he gave you power after weakness. then after power he ordained weakness and old age he creates whatever he wishes and he is the allknowing the allpowerful.
الله الذي خلقكم من ضعف ثم جعل من بعد ضعف قوة ثم جعل من بعد قوة ضعفا وشيبة يخلق ما يشاء وهو العليم القدير