11:118
وَلَوْ شَٓاءَ رَبُّكَ لَجَعَلَ النَّاسَ اُمَّةً وَاحِدَةً وَلَا یَزَالُونَ مُخْتَلِفٖینَۙ
Walaw shaa rabbuka lajaAAala alnnasa ommatan wahidatan wala yazaloona mukhtalifeena
Translations
And if your Lord had willed, He could have made mankind one community; but they will not cease to differ
Saheeh International
And if thy Lord had willed, He verily would have made mankind one nation, yet they cease not differing
Marmaduke Pickthall