An Nahl, 93 Ayah
16:93
وَلَوۡ شَآءَ ٱللَّهُ لَجَعَلَكُمۡ أُمَّةٗ وَٰحِدَةٗ وَلَٰكِن يُضِلُّ مَن يَشَآءُ وَيَهۡدِي مَن يَشَآءُۚ وَلَتُسۡـَٔلُنَّ عَمَّا كُنتُمۡ تَعۡمَلُونَ ٩٣
Wa Law Shā'a Al-Lahu Laja`alakum 'Ummatan Wāĥidatan Wa Lakin Yuđillu Man Yashā'u Wa Yahdī Man Yashā'u ۚ Wa Latus'alunna `Ammā Kuntum Ta`malūna
And if Allah had willed, He could have made you [of] one religion, but He causes to stray whom He wills and guides whom He wills. And you will surely be questioned about what you used to do.