وَلَوْ شَآءَ ٱللَّهُ لَجَعَلَكُمْ أُمَّةً وَٰحِدَةً وَلَٰكِن يُضِلُّ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ وَلَتُسْـَٔلُنَّ عَمَّا كُنتُمْ تَعْمَلُونَ ٩٣
Walaw shaa'allaahu laja`alakum ummataw waahidataw walaakiy yudillu may yashaa'u wayahdee may yashaa', walatus'alunna `ammaa kuntum ta`maloon
And if Allāh had willed, He could have made you [of] one religion, but He sends astray whom He wills and guides whom He wills. And you will surely be questioned about what you used to do.
- According to His knowledge of each soul's preference.