Tafheem-ul-Quran (En) - Al-Israa : 10
وَّ اَنَّ الَّذِیْنَ لَا یُؤْمِنُوْنَ بِالْاٰخِرَةِ اَعْتَدْنَا لَهُمْ عَذَابًا اَلِیْمًا۠   ۧ
and warns those who do not believe in the Hereafter that We have prepared for them a grievous chastisement. 11
11. This means to warn those persons or people or nations who do not take a lesson from the admonitions of the Quran to be ready to undergo that chastisement which Israelites had to suffer.
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