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:38:15 –

And these ˹disbelievers˺ await not but one blast ˹of the Horn˺; for it there will be no delay.  

And these, that is, the disbelievers of Mecca, do not await but a single Cry, namely, the Blast of the Resurrection that will herald chastisement for them, for which there will be no revoking (read fawāq or fuwāq).
القرآن:٣٨:١٥ –

وَمَا يَنْظُرُ هَٰؤُلَاءِ إِلَّا صَيْحَةً وَاحِدَةً مَا لَهَا مِنْ فَوَاقٍ  

{وما ينظر} ينتظر {هؤلاء} أي كفار مكة {إلا صيحة واحدة} هي نفخة القيامة تحل بهم العذاب {ما لها من فواق} بفتح الفاء وضمها: رجوع.