Al-Kāfi

Hadith 40
intellect
3ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ يُونُسَ بْنِ عَبْدِ الرَّحْمَنِ عَنْ بَعْضِ أَصْحَابِهِ قَالَ سُئِلَ أَبُو الْحَسَنِ (عَلَيْهِ السَّلام) هَلْ يَسَعُ النَّاسَ تَرْكُ الْمَسْأَلَةِ عَمَّا يَحْتَاجُونَ إِلَيْهِ فَقَالَ لا.
3. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus ibn ‘Abd al-Rahman that one of his people asked Abul Hasan (al-Kadhim) (as), "Is it permissible for people not to seek what (religious knowledge) they need?”. He replied, “No [it's not permissible]."
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī