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:41:12 –

And He completed them as seven heavens within two days and inspired in each heaven its command. And We adorned the nearest heaven with lamps and as protection. That is the determination of the Exalted in Might, the Knowing.  

Then He ordained them (the ˹suffixed˺ pronoun refers back to al-samā’, ‘the heaven’, because it ˹al-samā’˺ actually denotes that plural ˹sense˺ to which it will lead ˹in the following clause), in other words, He made them to be, seven heavens in two days — Thursday and Friday. He completed them in the last hour thereof, in which He created Adam — which is why He does not say sawā’an, ‘evenly’ here ˹as He did earlier˺; what is said here concords with those verse in which it is stated that the heavens and the earth were created in six days; and in each heaven He revealed its commandment’, that to which He commanded those in it ˹to follow˺, in the way of obedience and worship. And We adorned the lowest heaven with lamps, with stars, and ˹this was also˺ to guard them (hifzan is in the accusative because of its implicit verbal sense, in other words, ‘We guarded it against the devils lest they try to listen therein ˹to the angels˺ by stealth with meteors’). That is the ordaining of the Mighty, in His kingdom, the Knower, of His creatures.
القرآن:٤١:١٢ –

فَقَضَاهُنَّ سَبْعَ سَمَاوَاتٍ فِي يَوْمَيْنِ وَأَوْحَىٰ فِي كُلِّ سَمَاءٍ أَمْرَهَا ۚ وَزَيَّنَّا السَّمَاءَ الدُّنْيَا بِمَصَابِيحَ وَحِفْظًا ۚ ذَٰلِكَ تَقْدِيرُ الْعَزِيزِ الْعَلِيمِ  

{فقضاهنَّ} الضمير يرجع إلى السماء لأنها في معنى الجمع الآيلة إليه، أي صيَّرها {سبع سماوات في يومين} الخميس والجمعة فرغ منها في آخر ساعة منه، وفيها خلق آدم ولذلك لم يقل هنا سواء، ووافق ما هنا آيات خلق السماوات والأرض في ستة أيام {وأوحى في كل سماءٍ أمرها} الذي أمر به من فيها من الطاعة والعبادة {وزينا السماء الدنيا بمصابيح} بنجوم {وحفظاً} منصوب بفعله المقدَّر، أي حفظناها من استراق الشياطين السمع بالشهب {ذلك تقدير العزيز} في ملكه {العليم} بخلقه.