The Holy Quran 3:151 — Surah Ali 'Imran
Arabic text
سَنُلْقِى فِى قُلُوبِ ٱلَّذِينَ كَفَرُوا۟ ٱلرُّعْبَ بِمَآ أَشْرَكُوا۟ بِٱللَّهِ مَا لَمْ يُنَزِّلْ بِهِۦ سُلْطَـٰنًا ۖ وَمَأْوَىٰهُمُ ٱلنَّارُ ۚ وَبِئْسَ مَثْوَى ٱلظَّـٰلِمِينَ
Translation
We shall soon cast fear (terror) into the hearts of the Kuffaar because they ascribe partners to Allaah (an act) for which no justification has been revealed. Their abode (in the Aakhirah) is the Fire (of Jahannam), and it (Jahannam) is indeed an evil abode for the oppressors (the wrongdoers).
Tafsir (excerpt) — Tafsir Usmani
The awe of the Muslims in the hearts of the disbelievers: that is, this was a test for you. Now We shall cast such dread and awe into the hearts of the disbelievers that, even though you are wounded, weakened and have suffered losses, they will not dare to turn back and attack you. And so it happened.
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