The Holy Quran 16:93 — Surah An-Nahl
Arabic text
وَلَوْ شَآءَ ٱللَّهُ لَجَعَلَكُمْ أُمَّةً وَٰحِدَةً وَلَـٰكِن يُضِلُّ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ ۚ وَلَتُسْـَٔلُنَّ عَمَّا كُنتُمْ تَعْمَلُونَ
Translation
If Allaah willed, He would have made you a single nation but He sends astray whoever He wills and guides whoever He wills (for reasons that conform with His perfect wisdom and knowledge). (Whereas those gone astray do not always suffer punishment in this world, they should not think that they will escape punishment in the Aakhirah as well because then) You will definitely be questioned about what (ever) you do (and you will be punished for the wrong you did).
Tafsir (excerpt) — Tafsir Usmani
that is, He had the power not to let disagreement remain, but wisdom did not require it, as we have explained on several occasions. Shah [Abd al-Qadir] ﵀ writes: “From this it is known that one should not commit treachery or break a covenant even with a disbeliever. Disbelief is not removed by such things, and the evil consequence falls upon oneself.”
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