Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:3:88 –

Abiding eternally therein. The punishment will not be lightened for them, nor will they be reprieved.  

Abiding therein, that is, in the curse, or in the Fire implied by it ˹the curse˺; the chastisement shall not be lightened for them and they shall not be reprieved, they shall ˹not˺ be given any respite.
القرآن:٣:٨٨ –

خَالِدِينَ فِيهَا لَا يُخَفَّفُ عَنْهُمُ الْعَذَابُ وَلَا هُمْ يُنْظَرُونَ  

{خالدين فيها} أي اللعنة أو النار المدلول بها عليها {لا يخفف عنهم العذاب ولا هم يُنظرون} يمهلون.

See similar narrations below:

Collected by Qurʾān
quran:2:162 –

Abiding eternally therein. The punishment will not be lightened for them, nor will they be reprieved.  

Abiding therein, that is, ˹in˺ the curse and the Fire, ˹the latter˺ indicated by the following words: the chastisement shall not be lightened for them, ˹not even for˺ a blink of an eye, no respite shall be given them, in which to have time to repent or to excuse themselves.
القرآن:٢:١٦٢ –

خَالِدِينَ فِيهَا ۖ لَا يُخَفَّفُ عَنْهُمُ الْعَذَابُ وَلَا هُمْ يُنْظَرُونَ  

{خالدين فيها} أي اللعنة والنار المدلول بها عليها {لا يخفف عنهم العذاب} طرفة عين {ولا هم ينظرون} يمهلون لتوبة أو معذرة.
quran:16:85 –

And when those who wronged see the punishment, it will not be lightened for them, nor will they be reprieved.  

And when those who did wrong, ˹those who˺ disbelieved, behold the chastisement, the Fire, it shall not be lightened for them, the chastisement, nor will they be granted any respite, ˹any˺ deferment from it when they see it.
القرآن:١٦:٨٥ –

وَإِذَا رَأَى الَّذِينَ ظَلَمُوا الْعَذَابَ فَلَا يُخَفَّفُ عَنْهُمْ وَلَا هُمْ يُنْظَرُونَ  

{وإذا رأى الذين ظلموا} كفروا {العذاب} النار {فلا يُخفف عنهم} العذاب {ولا هم يُنظرون} يمهلون عنه إذا رأوه.