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:18:9 –

Or have you thought that the companions of the cave and the inscription were, among Our signs, a wonder?  

Or did you think, did you suppose, that the Companions of the Cave, the cavern in the mountain, and the Inscription, the tablet wherein their names and lineages had been inscribed — the Prophet (s) had been asked about their tale — were, with regard to their tale, a ˹unique˺ marvel from among, the entirety ˹of˺, Our signs? (‘ajaban, ‘a marvel’ is the predicate of ˹the defective verb˺ kāna ˹sc. kānū˺, the preceding ˹min āyātinā, ‘from among Our signs’˺ being a circumstantial qualifier). In other words, ˹did you suppose˺ that they were a marvel exclusively from among all ˹Our˺ other signs, or that they were the most marvellous among them? Not so.
القرآن:١٨:٩ –

أَمْ حَسِبْتَ أَنَّ أَصْحَابَ الْكَهْفِ وَالرَّقِيمِ كَانُوا مِنْ آيَاتِنَا عَجَبًا  

{أم حسبت} أي ظننت {أن أصحاب الكهف} الغار في الجبل {والرقيم} اللوح المكتوب فيه أسماؤهم وأنسابهم وقد سئل ﷺ عن قصتهم {كانوا} في قصتهم {من} جملة {آياتنا عجبا} خبر كان وما قبله حال، أي كانوا عجبا دون باقي الآيات أو أعجبها ليس الأمر كذلك.