from the Prophet ﷺ, regarding the 'barrier (18:93).' "They excavated each day, until when they are just about to penetrate it, their leader says: 'Go back so that you can penetrate it tomorrow!'" He said: "But Allah makes it return just as it was, until their appointed time, when Allah ordains to send them upon the people, and their leader says: 'Go back so you can penetrate it tomorrow, if Allah wills.' So he makes this exception." He said: "So they return, and find it just as it was when they left it. Then they penetrate it, and [they (Ya'juj & Ma'juj)] are released upon the people drinking up the water, and the people flee from them. They shoot their arrows into the heavens so they returned dyed with blood, and they say - crudely and arrogantly - 'We vanquished those in the earth, let us dominate the inhabitants of the heavens.' Then Allah sends Naghaf upon them, attaching to the nape of their necks, destroying them." He said: "By the One in Whose Hand is the soul of Muhammad! The beasts of the earth will become very fat and bloated with milk from their flesh."  

عَنِ النَّبِيِّ ﷺ فِي السَّدِّ قَالَ يَحْفِرُونَهُ كُلَّ يَوْمٍ حَتَّى إِذَا كَادُوا يَخْرِقُونَهُ قَالَ الَّذِي عَلَيْهِمُ ارْجِعُوا فَسَتَخْرِقُونَهُ غَدًا فَيُعِيدُهُ اللَّهُ كَأَمْثَلِ مَا كَانَ حَتَّى إِذَا بَلَغَ مُدَّتَهُمْ وَأَرَادَ اللَّهُ أَنْ يَبْعَثَهُمْ عَلَى النَّاسِ قَالَ الَّذِي عَلَيْهِمُ ارْجِعُوا فَسَتَخْرِقُونَهُ غَدًا إِنْ شَاءَ اللَّهُ وَاسْتَثْنَى قَالَ فَيَرْجِعُونَ فَيَجِدُونَهُ كَهَيْئَتِهِ حِينَ تَرَكُوهُ فَيَخْرِقُونَهُ فَيَخْرُجُونَ عَلَى النَّاسِ فَيَسْتَقُونَ الْمِيَاهَ وَيَفِرُّ النَّاسُ مِنْهُمْ فَيَرْمُونَ بِسِهَامِهِمْ فِي السَّمَاءِ فَتَرْجِعُ مُخَضَّبَةً بِالدِّمَاءِ فَيَقُولُونَ قَهَرْنَا مَنْ فِي الأَرْضِ وَعَلَوْنَا مَنْ فِي السَّمَاءِ قَسْوَةً وَعُلُوًّا فَيَبْعَثُ اللَّهُ عَلَيْهِمْ نَغَفًا فِي أَقْفَائِهِمْ فَيَهْلِكُونَ قَالَ فَوَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنَّ دَوَابَّ الأَرْضِ تَسْمَنُ وَتَبْطَرُ وَتَشْكَرُ شَكْرًا مِنْ لُحُومِهِمْ  

"Gog and Magog people dig every day until, when they can almost see the rays of the sun, the one in charge of them says: "Go back and we will dig it tomorrow." Then Allah puts it back, stronger than it was before. (This will continue) until, when their time has come, and Allah wants to send them against the people, they will dig until they can almost see the rays of the sun, then the one who is in charge of them will say: "Go back, and we will dig it tomorrow if Allah wills.' So they will say: "If Allah wills." Then they will come back to it and it will be as they left it. So they will dig and will come out to the people, and they will drink all the water. The people will fortify themselves against them in their fortresses. They will shoot their arrows towards the sky and they will come back with blood on them, and they will say: "We have defeated the people of earth and dominated the people of heaven." Then Allah will send a worm in the napes of their necks and will kill them thereby.'" The Messenger of Allah ﷺ said: "By the One in Whose Hand is my soul, the beasts of the earth will grow fat on their flesh." (Using translation from Ibn Mājah 4080)  

عَنْ رَسُولِ اللهِ ﷺ قَالَ إِنَّ يَأْجُوجَ وَمَأْجُوجَ لَيَحْفِرُونَ السَّدَّ كُلَّ يَوْمٍ حَتَّى إِذَا كَادُوا يَرَوْنَ شُعَاعَ الشَّمْسِ قَالَ الَّذِي عَلَيْهِمْ ارْجِعُوا فَسَتَحْفِرُونَهُ غَدًا فَيَعُودُونَ إِلَيْهِ كَأَشَدِّ مَا كَانَ حَتَّى إِذَا بَلَغَتْ مُدَّتُهُمْ وَأَرَادَ اللهُ أَنْ يَبْعَثَهُمْ عَلَى النَّاسِ حَفَرُوا حَتَّى إِذَا كَادُوا يَرَوْنَ شُعَاعَ الشَّمْسِ قَالَ الَّذِي عَلَيْهِمْ ارْجِعُوا فَسَتَحْفِرُونَهُ غَدًا إِنْ شَاءَ اللهُ وَيَسْتَثْنِي فَيَعُودُونَ إِلَيْهِ وَهُوَ كَهَيْئَتِهِ حِينَ تَرَكُوهُ فَيَحْفِرُونَهُ وَيَخْرُجُونَ عَلَى النَّاسِ فَيُنَشِّفُونَ الْمِيَاهَ وَيَتَحَصَّنَ النَّاسُ مِنْهُمْ فِي حُصُونِهِمْ فَيَرْمُونَ بِسِهَامِهِمْ إِلَى السَّمَاءِ فَتَرْجِعُ وَعَلَيْهَا كَهَيْئَةِ الدَّمِ فَيَقُولُونَ قَهَرْنَا أَهْلَ الْأَرْضِوَعَلَوْنَا أَهْلَ السَّمَاءِ فَيَبْعَثُ اللهُ عَلَيْهِمْ نَغَفًا فِي أَقْفَائِهِمْ فَيَقْتُلُهُمْ بِهَا فَقَالَ رَسُولُ اللهِ ﷺ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنَّ دَوَابَّ الْأَرْضِ لَتَسْمَنُ وَتَشْكُرُ شُكْرًا مِنْ لُحُومِهِمْ وَدِمَائِهِمْ  

a Hadith of Abu Hurairah, from the Prophet ﷺ, regarding the 'barrier (18:93).' "They excavated each day, until when they are just about to penetrate it, their leader says: 'Go back so that you can penetrate it tomorrow!'" He said: "But Allah makes it return just as it was, until their appointed time, when Allah ordains to send them upon the people, and their leader says: 'Go back so you can penetrate it tomorrow, if Allah wills.' So he makes this exception." He said: "So they return, and find it just as it was when they left it. Then they penetrate it, and [they (Ya'juj & Ma'juj)] are released upon the people drinking up the water, and the people flee from them. They shoot their arrows into the heavens so they returned dyed with blood, and they say - crudely and arrogantly - 'We vanquished those in the earth, let us dominate the inhabitants of the heavens.' Then Allah sends Naghaf upon them, attaching to the nape of their necks, destroying them." He said: "By the One in Whose Hand is the soul of Muhammad! The beasts of the earth will become very fat and bloated with milk from their flesh." (Using translation from Tirmidhī 3153)   

عَنِ النَّبِيِّ ﷺ فِي السَّدِّ قَالَ يَحْفِرُونَهُ كُلَّ يَوْمٍ حَتَّى إِذَا كَادُوا يَخْرِقُونَهُ قَالَ الَّذِي عَلَيْهِمُ ارْجِعُوا فَسَتَخْرِقُونَهُ غَدًا قَالَ فَيُعِيدُهُ اللَّهُ ﷻ كَأَشَدِّ مَا كَانَ حَتَّى إِذَا بَلَغُوا مُدَّتَهُمْ وَأَرَادَ اللَّهُ تَعَالَى قَالَ الَّذِي عَلَيْهِمُ ارْجِعُوا فَسَتَخْرِقُونَهُ غَدًا إِنْ شَاءَ اللَّهُ تَعَالَى وَاسْتَثْنَى قَالَ فَيَرْجِعُونَ وَهُوَ كَهَيْئَتِهِ حِينَ تَرَكُوهُ فَيَخْرِقُونَهُ وَيَخْرُجُونَ عَلَى النَّاسِ فَيَسْتَقُونَ الْمِيَاهَ وَيَفِرُّ النَّاسُ مِنْهُمْ فَيَرْمُونَ سِهَامَهُمْ فِي السَّمَاءِ فَتَرْجِعُ مُخَضَّبَةً بِالدِّمَاءِ فَيَقُولُونَ قَهَرْنَا أَهْلَ الْأَرْضِ وَغَلَبْنَا مَنْ فِي السَّمَاءِ قُوَّةً وَعُلُوًّا قَالَ «فَيَبْعَثُ اللَّهُ ﷻ عَلَيْهِمْ نَغَفًا فِي أَقْفَائِهِمْ» قَالَ «فَيُهْلِكُهُمْ» قَالَ «وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنَّ دَوَابَّ الْأَرْضِ لَتَسْمُنُ وَتَبْطُرُ وَتَشْكُرُ شُكْرًا وَتَسْكَرُ سُكْرًا مِنْ لُحُومِهِمْ»  

"إِنَّ يأجوجَ ومأجوجَ لَيَحْفِرُون السَّدَّ في كُلِّ يومٍ، حتَّى إِذا كادُوا يَروْنَ شُعَاعَ الشَّمْسِ قال الذى عَلَيْهِمْ: ارجِعُوا فَسَنَحْفِرُهُ غدًا، فَيُعيدُهُ اللَّه أشَدَّ ما كان، حتى إِذا بَلَغَتْ مُدَّتُهُمْ، وَأرادَ اللَّه تعالى أنْ يَبْعَثَهُمْ على النَّاسِ حَفَروا، حتى إِذا كادُوا يَرَوْنَ شُعَاعَ الشَّمْسِ، قال الذى عليهم: ارجعوا فَسَتَحْفِرونه غدًا إِنَّ شاءَ اللَّه تعالى، واستَثْنَوْا، فَيَعُودُون إِليه وَهُو كهيئته حينَ تَرَكُوهُ، فَيَحْفِروُنه، ويخرُجون على النَّاسِ، فَيُنَشِّفُون الماءَ، ويتحصَّن النَّاسُ منهم في حصونهم، فَيَرْمونَ سِهامَهُم إِلى السَّمَاءِ، فَتَرْجعُ وعَلَيْها كهيئةِ الدَّمِ الَّذى أُحْفظَ، فَيَقولونَ: قَهَرْنا أَهلَ الأرضِ، وعَلَوْنَا أَهْلَ السَّمَاء، فَيَبْعَثُ اللَّه عليهم نَغَفًا في أَقْفائِهمْ، فَيَقْتُلُهم بِهَا، والَّذى نَفْسِى بِيَدِهِ، إِنَّ دَوَابَّ الأَرضِ لَتَسْمَنُ وَتَشْكَرُ شَكَرًا من لحومهم ودمائهم".