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:18:97 –

So Gog and Magog were unable to pass over it, nor were they able ˹to effect˺ in it any penetration.  

And so they, Gog and Magog, were not able to scale it, to climb up its length, because of its ˹great˺ height and smoothness, nor could they pierce it, because of its firmness and thickness.
القرآن:١٨:٩٧ –

فَمَا اسْطَاعُوا أَنْ يَظْهَرُوهُ وَمَا اسْتَطَاعُوا لَهُ نَقْبًا  

{فما اسطاعوا} أي يأجوج ومأجوج {أن يظهروه} يعلوا ظهره لارتفاعه وملاسته {وما استطاعوا له نقبا} لصلابته وسمكه.