٥ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنِ ابْنِ أَبِي نَجْرَانَ عَنْ عِيسَى بْنِ عَبْدِ الله بْنِ عُمَرَ بْنِ عَلِيِّ بْنِ أَبِي طَالِبٍ (عَلَيْهِ السَّلام) عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ قُلْتُ لَهُ إِنْ كَانَ كَوْنٌ وَلا أَرَانِي الله فَبِمَنْ أَئْتَمُّ فَأَوْمَأَ إِلَى ابْنِهِ مُوسَى قَالَ قُلْتُ فَإِنْ حَدَثَ بِمُوسَى حَدَثٌ فَبِمَنْ أَئْتَمُّ قَالَ بِوَلَدِهِ قُلْتُ فَإِنْ حَدَثَ بِوَلَدِهِ حَدَثٌ وَتَرَكَ أَخاً كَبِيراً وَابْناً صَغِيراً فَبِمَنْ أَئْتَمُّ قَالَ بِوَلَدِهِ ثُمَّ وَاحِداً فَوَاحِداً.  وَفِي نُسْخَةِ الصَّفْوَانِيِّ ثُمَّ هَكَذَا أَبَداً.
 5. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from ibn abu Najran from ‘Isa ibn ‘Abdallah ibn ‘Umar ibn Ali ibn abu Talib  who has said that he asked abu ‘Abdallah  the following. “Would there happen what is to happen, may Allah would not show me such a day (death of the Imam  who then must I follow as my Imam?” The Imam  pointed to his son Musa . The narrator has said that he asked the Imams , “ What if something will happen to Musa  who then must I follow?” The Imam , “Follow a son.” I then asked, “What if something would happen to the son and the Imam would leave behind an elder brother or a small son then who must I follow?” The Imam  said, “Follow his son and so on one after the other.” In the script of Sawan it says, “. .and so on forever.”