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:50:6 –

Have they not looked at the heaven above them - how We structured it and adorned it and ˹how˺ it has no rifts?  

Have they not then looked, with their own eyes, at the heaven, being, above them, in order to take heed by their own minds ˹of the consequences for them˺ when they deny the Resurrection, how We have built it, without supports, and adorned it, with planets, and how there are no cracks in it?, no fissures blemishing it.
القرآن:٥٠:٦ –

أَفَلَمْ يَنْظُرُوا إِلَى السَّمَاءِ فَوْقَهُمْ كَيْفَ بَنَيْنَاهَا وَزَيَّنَّاهَا وَمَا لَهَا مِنْ فُرُوجٍ  

{أفلم ينظروا} بعيونهم معتبرين بعقولهم حين أنكروا البعث {إلى السماء} كائنة {فوقهم كيف بنيناها} بلا عمد {وزيناها} بالكواكب {وما لها من فروج} شقوق تعيبها.