٢ـ أَحْمَدُ بْنُ إِدْرِيسَ وَمُحَمَّدُ بْنُ يَحْيَى جَمِيعاً عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ عِيسَى بْنِ عُبَيْدٍ عَنْ مُحَمَّدِ بْنِ سِنَانٍ عَنْ حَمْزَةَ بْنِ الطَّيَّارِ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ لَوْ بَقِيَ اثْنَانِ لَكَانَ أَحَدُهُمَا الْحُجَّةَ عَلَى صَاحِبِهِ.  مُحَمَّدُ بْنُ الْحَسَنِ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ مُحَمَّدِ بْنِ عِيسَى مِثْلَهُ.
 2. Ahmad ibn Idris and Muhammad ibn Yahya together have narrated from Ahmad ibn Muhammad from Muhammad ibn ‘Isa from abu ‘Ubayd from Muhammad ibn Sinan from abu Hamza ibn al-Tayyar from abu ‘Abdallah  who has said the following. “Would there remain only two people on earth, one of them would the person with divine authority over the other.” Muhammad ibn al-Hassan has narrated from Sahl ibn Ziyad from Muhammad ibn ‘Isa a similar Hadith.