Sahih al-Bukhari 3347
Book 60: Prophets · Narrated by Abu Huraira
Arabic
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا ابْنُ طَاوُسٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " فَتَحَ اللَّهُ مِنْ رَدْمِ يَأْجُوجَ وَمَأْجُوجَ مِثْلَ هَذَا ". وَعَقَدَ بِيَدِهِ تِسْعِينَ.
English translation
Narrated Abu Huraira:The Prophet (ﷺ) said, "Allah has made an opening in the wall of the Gog and Magog (people) like this, and he made with his hand (with the help of his fingers)
Reference: Sahih al-Bukhari 3347, Book of Prophets. English translation by Dr. Muhammad Muhsin Khan.