١ـ عَلِيُّ بْنُ مُحَمَّدٍ وَمُحَمَّدُ بْنُ الْحَسَنِ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ أَبِي نَصْرٍ عَنْ صَفْوَانَ بْنِ يَحْيَى قَالَ سَمِعْتُ أَبَا الْحَسَنِ (عَلَيْهِ السَّلام) يَقُولُ كَانَ جَعْفَرُ بْنُ مُحَمَّدٍ (عَلَيْهما السَّلام) يَقُولُ لَوْ لا أَنَّا نَزْدَادُ لانْفَدْنَا.
 مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ خَالِدٍ عَنْ صَفْوَانَ عَنْ أَبِي الْحَسَنِ مِثْلَهُ.
 1. Ali ibn Muhammad and Muhammad ibn al-Hassan have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad ibn abu Nasr from Safwan ibn Yahya who has said that he heard abu Ja‘far  say the following. “Would we not receive (new knowledge) we would diminish (in knowledge).” Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Khalid from Safwan from abu a1-Hassan  a similar Hadith.