1511 - وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «إِنَّ ذَا اَلْقَرْنَيْنِ لَمَّا اِنْتَهَى إِلَى اَلسَّدِّ جَاوَزَهُ فَدَخَلَ فِي اَلظُّلُمَاتِ فَإِذَا هُوَ بِمَلَكٍ قَائِمٍ عَلَى جَبَلٍ طُولُهُ خَمْسُمِائَةِ ذِرَاعٍ فَقَالَ لَهُ اَلْمَلَكُ يَا ذَا اَلْقَرْنَيْنِ أَ مَا كَانَ خَلْفَكَ مَسْلَكٌ فَقَالَ لَهُ ذُو اَلْقَرْنَيْنِ مَنْ أَنْتَ قَالَ أَنَا مَلَكٌ مِنْ مَلاَئِكَةِ اَلرَّحْمَنِ مُوَكَّلٌ بِهَذَا اَلْجَبَلِ وَ لَيْسَ مِنْ جَبَلٍ خَلَقَهُ اَللَّهُ إِلاَّ وَ لَهُ عِرْقٌ مُتَّصِلٌ بِهَذَا اَلْجَبَلِ فَإِذَا أَرَادَ اَللَّهُ عَزَّ وَ جَلَّ أَنْ يُزَلْزِلَ مَدِينَةً أَوْحَى إِلَيَّ فَزَلْزَلْتُهَا.
Hadith.1511 - Imam Jafar ibn Muhammad Al-Sadiq 
said:
"When Dhu al-Qarnayn reached the barrier (the wall), he passed beyond it and entered the darkness. There, he encountered an angel standing upon a mountain whose height was five hundred cubits.
The angel said to him, 'O’ Dhu al-Qarnayn, was there no way back behind you?'
Dhu al-Qarnayn asked: 'Who are you?'
The angel replied: 'I am an angel from among the angels of the Most Merciful, assigned to this mountain. There is no mountain that Allah (swt) has created except that it has a root connected to this mountain. When Allah (swt), the Mighty and Glorious, intends to cause an earthquake in a city, He commands me, and I cause it to quake.'"
