Al-Kāfi
Hadith 837 9ـ عَنْهُ عَنْ مُحَمَّدِ بْنِ عَلِيٍّ عَنْ أَبِي يَحْيَى الصَّنْعَانِيِّ قَالَ كُنْتُ عِنْدَ أَبِي الْحَسَنِ الرِّضَا (عَلَيْهِ السَّلام) فَجِيءَ بِابْنِهِ ابي جعفر (عَلَيْهِ السَّلام) وَهُوَ صَغِيرٌ فَقَالَ هَذَا الْمَوْلُودُ الَّذِي لَمْ يُولَدْ مَوْلُودٌ أَعْظَمُ بَرَكَةً عَلَى شِيعَتِنَا مِنْهُ.
9. It is narrated from him (Ahmad ibn Mihran) from Muhammad ibn Ali from abu Yahya al-San‘ani who has said the following. “Once I was in of abu al-Hassan al-Rida (a.s.) Someone brought his son, Ja’far (a.s.) to him and he was a small (child). The Imams (a.s.) said, “This new born is one the like of whom with such great holiness and blessing has not been born for our Shi‘a (followers).”