وَلَوۡ شَآءَ رَبُّكَ لَجَعَلَ ٱلنَّاسَ أُمَّةٗ وَٰحِدَةٗۖ وَلَا يَزَالُونَ مُخۡتَلِفِينَ
Wa law shaaa'a Rabbuka laja'alannnaasa ummatanw waa hidatanw wa laa yazaaloona mukhtalifeen
English Translation
And if your Lord had willed, He could have made mankind one community; but they will not cease to differ
— Saheeh International