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Surah 21. Al-Anbiya
Ayah 22 - 23
22لَوْ كَانَ فِيهِمَآ ءَالِهَةٌ إِلَّا ٱللَّهُ لَفَسَدَتَا ۚ فَسُبْحَـٰنَ ٱللَّهِ رَبِّ ٱلْعَرْشِ عَمَّا يَصِفُونَ
23لَا يُسْـَٔلُ عَمَّا يَفْعَلُ وَهُمْ يُسْـَٔلُونَ
[22-23] Had there been other deities besides Allah in the heavens and the earth, both (the heavens and the earth) would have gone out of order.22 So, absolutely free is Allah, Lord of the Throne,23 from the false things they ascribe to Him. He is accountable to none for what He does, but all others are accountable (to Him).
22This concise sentence contains two arguments:
(1) The obviously simple argument is that no institution, no household, not to speak of the vast universe containing multitudes of countless distant stars, can function smoothly and properly, if it has two masters.
(2) The deeper argument is that the system of the whole universe, including that of the earth, is functioning according to a universal law. It could not work so even for a moment, if there had been no proper proportion, balance, harmony and coordination between the different powers and countless things. This is a clear proof that there is a universal and all-powerful law and system which binds and forces these powers and things to co-operate and coordinate between themselves with a perfect proportion and harmony and this could not have happened if there had been different independent rulers. The existence of such a system is itself a clear proof that there must be One All-Powerful Manager and Administrator governing and ruling the whole universe. For further details, please see E. N. 47 of Bani Isra'il (XVII).
23That is, "The Sovereign of the whole universe."