وَمَا كَانَ ٱلنَّاسُ إِلَّآ أُمَّةٗ وَٰحِدَةٗ فَٱخۡتَلَفُواْۚ وَلَوۡلَا كَلِمَةٞ سَبَقَتۡ مِن رَّبِّكَ لَقُضِيَ بَيۡنَهُمۡ فِيمَا فِيهِ يَخۡتَلِفُونَ

Wa maa kaanan naasu illaaa ummatanw waahidatan fa khtalafoo; wa law laa kalimatun sabaqat mir Rabbika laqudiya bainahum fee maa feehi yakhtalifoon

Mankind was but one nation, but differed (later). Had it not been for a word that went forth before from thy Lord, their differences would have been settled between them.

— Yunus (يُونُس), 10:19