He who is able to do what He wills as He wills.
“Set forth to them the similitude of the life of this world: it is like the rain which We send down from the skies: the earth’s vegetation absorbs it. But soon
it becomes dry stubble, which the winds do scatter: IT IS (ONLY) ALLAH WHO PREVAILS OVER ALL
THINGS. Wealth and sons are allurements of the life of this world; but the things that endure, Good Deeds, are best in the sight of thy Lord, as rewards, and best as (the foundation for) hopes.”
(18:45-46) The Holy Quran
From the root q-d-r with the classical Arabic connotations: to measure something, know the measure of something to distribute, allot or apportion the suitable measure to decree, to ordain, to decide a matter (as though measuring it to fit) to exercise thought in preparing something.