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:77:12 –

For what Day was it postponed?  

For what day — for a tremendous day — has it been appointed?, ˹it has been appointed˺ for witnessing ˹of the messengers˺ against their communities ˹to the effect˺ that they delivered ˹their messages from God˺.
القرآن:٧٧:١٢ –

لِأَيِّ يَوْمٍ أُجِّلَتْ  

{لأي يوم} ليوم عظيم {أُجلت} للشهادة على أممهم بالتبليغ.