Al-Kāfi
Hadith 823 11ـ أَحْمَدُ بْنُ مِهْرَانَ عَنْ مُحَمَّدِ بْنِ عَلِيٍّ عَنْ أَبِي عَلِيٍّ الْخَزَّازِ عَنْ دَاوُدَ بْنِ سُلَيْمَانَ قَالَ قُلْتُ لابِي إِبْرَاهِيمَ (عَلَيْهِ السَّلام) إِنِّي أَخَافُ أَنْ يَحْدُثَ حَدَثٌ وَلا أَلْقَاكَ فَأَخْبِرْنِي مَنِ الامَامُ بَعْدَكَ فَقَالَ ابْنِي فُلانٌ يَعْنِي أَبَا الْحَسَنِ (عَلَيْهِ السَّلام )
11. Ahmad ibn Mihran has narrated from Muhammad ibn Ali from Abu Ali al-Khazzaz from Dawud ibn Sulay who has said the following. “I said to abu Ibrahim (a.s.), “I am afraid that an incident may take place and I will not be able to see you, inform me who will be the Imam after you?” The Imam (a.s.) said, “My son, so and so, meaning thereby abu al-Hassan (a.s.).”