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:82:18 –

Then, what can make you know what is the Day of Recompense?  

Again, what would show you what the Day of Judgement is? — ˹repeated˺ to emphasise its enormity.
القرآن:٨٢:١٨ –

ثُمَّ مَا أَدْرَاكَ مَا يَوْمُ الدِّينِ  

{ثم ما أدراك ما يومُ الدين} تعظيم لشأنه.

See similar narrations below:

Collected by Qurʾān
quran:77:14 –

And what can make you know what is the Day of Judgement?  

And how would you know what the Day of Decision is? — emphasising the enormity of its terror.
القرآن:٧٧:١٤ –

وَمَا أَدْرَاكَ مَا يَوْمُ الْفَصْلِ  

{وما أدراك ما يوم الفصل} تهويل لشأنه.