 ٤ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ ابْنِ فَضَّالٍ عَنِ الْحَسَنِ بْنِ الْجَهْمِ قَالَ سَمِعْتُ الرِّضَا (عَلَيْهِ السَّلام) يَقُولُ صَدِيقُ كُلِّ امْرِئٍ عَقْلُهُ وَعَدُوُّهُ جَهْلُهُ.
 4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Faddal from al-Hassan ibn al-Jahm who has said the following. “I heard (Imam) al-Rida (a.s) saying, “The friend of a person is his/her Intelligence and the enemy of a person is his/her ignorance.”