Al-Kāfi
Hadith 46 9ـ عَلِيُّ بْنُ مُحَمَّدٍ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ مُحَمَّدِ بْنِ عِيسَى عَمَّنْ رَوَاهُ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ قَالَ لَهُ رَجُلٌ جُعِلْتُ فِدَاكَ رَجُلٌ عَرَفَ هَذَا الامْرَ لَزِمَ بَيْتَهُ وَلَمْ يَتَعَرَّفْ إِلَى أَحَدٍ مِنْ إِخْوَانِهِ قَالَ فَقَالَ كَيْفَ يَتَفَقَّهُ هَذَا فِي دِينِهِ.
9. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from Muhammad ibn ‘Isa from one who narrated to him that Abu ‘Abdillah (al-Sadiq) (as) was asked, "May I be your ransom, there is a man who believes in this issue (i.e. the imamah of Ahlul-bayt), but locks himself at home and does not acquaint himself with his community.” So he said, “How will he achieve a good understanding of his religion [without talking to the knowledgable people of his community]?".