سُورَةُ هُودٍ
Surah Hud·11:118
وَلَوْ شَاءَ رَبُّكَ لَجَعَلَ النَّاسَ أُمَّةً وَاحِدَةً ۖ وَلَا يَزَالُونَ مُخْتَلِفِينَ١١٨
And had thy Sustainer so willed, He could surely have made all mankind one single community: but [He willed it otherwise, and so] they continue to hold divergent views'