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:76:13 –

˹They will be˺ reclining therein on adorned couches. They will not see therein any ˹burning˺ sun or ˹freezing˺ cold.  

reclining (muttaki’īna is a circumstantial qualifier referring to the subject of the implicit ˹verb˺ udkhilūhā, ‘they are admitted into it’) therein upon couches (arā’ik are beds inside canopies). They will not find (lā yarawna is a second circumstantial qualifier) therein either sun or bitter cold, neither heat nor cold; but it is also said that zamharīr means ‘the moon’, and so, in other words, it ˹means that it˺ will be bright without any sun or moon.
القرآن:٧٦:١٣ –

مُتَّكِئِينَ فِيهَا عَلَى الْأَرَائِكِ ۖ لَا يَرَوْنَ فِيهَا شَمْسًا وَلَا زَمْهَرِيرًا  

{متكئين} حال من مرفوع أدخلوها المقدر {فيها على الأرائك} السرر في الحجال {لا يروْن} لا يجدون حال ثانية {فيها شمسا ولا زمهريرا} لا حرا ولا بردا وقيل الزمهرير القمر فهي مضيئة من غير شمس ولا قمر.