Al-Kāfi
Hadith 50 4ـ مُحَمَّدُ بْنُ إِسْمَاعِيلَ عَنِ الْفَضْلِ بْنِ شَاذَانَ عَنْ حَمَّادِ بْنِ عِيسَى عَنْ رِبْعِيِّ بْنِ عَبْدِ الله عَنْ رَجُلٍ عَنْ ابي جعفر (عَلَيْهِ السَّلام) قَالَ قَالَ الْكَمَالُ كُلُّ الْكَمَالِ التَّفَقُّهُ فِي الدِّينِ وَالصَّبْرُ عَلَى النَّائِبَةِ وَتَقْدِيرُ الْمَعِيشَةِ.
4. Muhammad ibn ’Isma‘il has narrated from Fadl ibn Shadhan from Hammad ibn ‘Isa from Rab‘i ibn ‘Abdallah from a man that Abu Ja‘far (al-Baqir) (as) said: 'The most perfect of all perfection is a good understanding of religion, exercising patience during affliction and setting up of means of living.'