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:22:55 –

But those who disbelieve will not cease to be in doubt of it until the Hour comes upon them unexpectedly or there comes to them the punishment of a barren Day.  

And those who disbelieve will not cease to be in doubt of it, that is, the Qur’ān — because of what Satan had cast onto the tongue of the Prophet (s) and what had thereafter been nullified — until the Hour comes upon them unawares, that is, the Hour of their death or ˹of˺ resurrection, ˹comes upon them˺ suddenly, or there come upon them the chastisement of a day of desolation (‘aqīm), namely, the day of Badr, which held nothing of good for disbelievers, much like a sterile wind (rīh ‘aqīm) that bears no good; or it means, the Day of Resurrection, ˹referred to as ‘desolate’˺ because thereafter there will be no more night.
القرآن:٢٢:٥٥ –

وَلَا يَزَالُ الَّذِينَ كَفَرُوا فِي مِرْيَةٍ مِنْهُ حَتَّىٰ تَأْتِيَهُمُ السَّاعَةُ بَغْتَةً أَوْ يَأْتِيَهُمْ عَذَابُ يَوْمٍ عَقِيمٍ  

{ولا يزال الذين كفروا في مرية} شك {منه} أي القرآن بما ألقاه الشيطان على لسان النبي ثم أبطل {حتى تأتيهم الساعة بغتة} أي ساعة موتهم أو القيامة فجأة {أو يأتيهم عذاب يوم عقيم} هو يوم بدر لا خير فيه للكفار كالريح العقيم التي لا تأتي بخير، أو هو يوم القيامة لا ليل بعده.