Sura al-Anʿām 6:44

فَلَمَّا نَسُوا۟ مَا ذُكِّرُوا۟ بِهِۦ فَتَحْنَا عَلَيْهِمْ أَبْوَٰبَ كُلِّ شَىْءٍ حَتَّىٰٓ إِذَا فَرِحُوا۟ بِمَآ أُوتُوٓا۟ أَخَذْنَٰهُم بَغْتَةً فَإِذَا هُم مُّبْلِسُونَ

fa-lammā nasū mā dhukkirū bihi fataḥnā ʿalayhim abwāba kulli shayʾin ḥatta idhā fariḥū bimā ūtū akhadhnāhum baghtatan fa-idhā hum mublisūna

But when they forgot the warning they had received, We opened to them the gates of all (good) things, until, in the midst of their enjoyment of Our gifts, on a sudden, We called them to account, when lo! they were plunged in despair!

Sura al-Muʾminūn 23:77

حَتَّىٰٓ إِذَا فَتَحْنَا عَلَيْهِم بَابًا ذَا عَذَابٍ شَدِيدٍ إِذَا هُمْ فِيهِ مُبْلِسُونَ

ḥatta idhā fataḥnā ʿalayhim bāban dhā ʿadhābin shadīdin idhā hum fīhi mublisūna

Until We open on them a gate leading to a severe Punishment: then Lo! they will be plunged in despair therein!

Sura al-Rūm 30:49

وَإِن كَانُوا۟ مِن قَبْلِ أَن يُنَزَّلَ عَلَيْهِم مِّن قَبْلِهِۦ لَمُبْلِسِينَ

wa-in kānū min qabli an yunazzala ʿalayhim min qablihi la-mublisīna

Even though, before they received (the rain) - just before this - they were dumb with despair!

Sura al-Zukhruf 43:75

لَا يُفَتَّرُ عَنْهُمْ وَهُمْ فِيهِ مُبْلِسُونَ

lā yufattaru ʿanhum wa-hum fīhi mublisūna

Nowise will the (Punishment) be lightened for them, and in despair will they be there overwhelmed.