٤ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ الْبَرْقِيِّ عَنْ عَلِيِّ بْنِ إِسْمَاعِيلَ عَنِ ابْنِ سِنَانٍ عَنْ حَمْزَةَ بْنِ الطَّيَّارِ قَالَ سَمِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلام) يَقُولُ لَوْ لَمْ يَبْقَ فِي الارْضِ إِلا اثْنَانِ لَكَانَ أَحَدُهُمَا الْحُجَّةَ أَوْ الثَّانِي الْحُجَّةَ.  الشَّكُّ مِنْ أَحْمَدَ بْنِ مُحَمَّدٍ.
 4. A number of our people has narrated from Ahmad ibn Muhammad al-Barqi from Ali ibn Isma‘il from ibn Sinan from Hamza ibn al-Tayyar who has said the following. “I heard Imam abu ‘Abdallah  saying, ‘Would there remain on earth no one except two people one of them will be the person with Divine authority or the second one will be the person with Divine authority (uncertainty is from the narrator).”