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:21:96 –

Until when ˹the dam of˺ Gog and Magog has been opened and they, from every elevation, descend  

Until (hattā, ˹a particle˺ expressing the end of the prohibition of their return) when Gog and Magog (read Ya’jūju wa-Ma’jūju or Yājūju wa-Mājūju, ˹these are˺ non-Arabic names of two tribes; there is an implicit genitive annexation before this clause, namely, the ˹gates of the˺ sadd, ‘the barrier’, ˹built˺ against them) are let loose (read futihat or futtihat) — and this will happen near the ˹time of the˺ Resurrection — and they slide down, they hasten, from every slope, ˹every˺ highland.
القرآن:٢١:٩٦ –

حَتَّىٰ إِذَا فُتِحَتْ يَأْجُوجُ وَمَأْجُوجُ وَهُمْ مِنْ كُلِّ حَدَبٍ يَنْسِلُونَ  

{حتى} غاية لامتناع رجوعهم {إذا فتحت} بالتخفيف والتشديد {يأجوج ومأجوج} بالهمز وتركه اسمان أعجميان لقبيلتين، ويقدر قبله مضاف أي سدهما وذلك قرب القيامة {وهم من كل حدب} مرتفع من الأرض {ينسلُون} يسرعون.