The Holy Quran 21:22 — Surah Al-Anbya
Arabic text
لَوْ كَانَ فِيهِمَآ ءَالِهَةٌ إِلَّا ٱللَّهُ لَفَسَدَتَا ۚ فَسُبْحَـٰنَ ٱللَّهِ رَبِّ ٱلْعَرْشِ عَمَّا يَصِفُونَ
Translation
If there were other Aaliha but Allaah in the heavens and the earth, the (system of the) two would be in chaos (because no two or more persons can think the same. Had there been many gods, each would have different opinions on running the system of the universe. It would therefore be impossible to see the system of the universe functioning as perfectly and flawlessly as it does. The finely tuned manner in which everything occurs makes it apparent that there is only One Allaah in control of everything). Allaah, the Rabb of the Arsh, is Pure from (not in need of) what (gods) they ascribe (as His equals).
Tafsir (excerpt) — Tafsir Usmani
The existence of more than one god is rationally impossible: an important proof: this is an extremely firm and clear proof refuting a plurality of gods, which the Noble Quran has presented in its own distinctive manner.
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