The Letter Qaf 50:6. Juz 26, page 518.
أَفَلَمْ يَنظُرُوٓا۟ إِلَى ٱلسَّمَآءِ فَوْقَهُمْ كَيْفَ بَنَيْنَـٰهَا وَزَيَّنَّـٰهَا وَمَا لَهَا مِن فُرُوجٍ٦Have they not then observed the sky above them, how We have constructed it and beautified it, and how there are no rifts therein?
Qaf 50:6, translated by Marmaduke Pickthall