١٠ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ ابْنِ مِهْرَانَ قَالَ كَتَبَ أَبُو جَعْفَرٍ الثَّانِي (عَلَيْهِ الْسَّلام) إِلَى رَجُلٍ ذَكَرْتَ مُصِيبَتَكَ بِعَلِيٍّ ابْنِكَ وَذَكَرْتَ أَنَّهُ كَانَ أَحَبَّ وُلْدِكَ إِلَيْكَ وَكَذَلِكَ الله عَزَّ وَجَلَّ إِنَّمَا يَأْخُذُ مِنَ الْوَالِدِ وَغَيْرِهِ أَزْكَى مَا عِنْدَ أَهْلِهِ لِيُعْظِمَ بِهِ أَجْرَ الْمُصَابِ بِالْمُصِيبَةِ فَأَعْظَمَ الله أَجْرَكَ وَأَحْسَنَ عَزَاكَ وَرَبَطَ عَلَى قَلْبِكَ إِنَّهُ قَدِيرٌ وَعَجَّلَ الله عَلَيْكَ بِالْخَلَفِ وَأَرْجُو أَنْ يَكُونَ الله قَدْ فَعَلَ إِنْ شَاءَ الله تَعَالَى. 
10. A number of our people have narrated from Sahl ibn Ziyad from ibn Mehran who has said the following: “Abu Ja’far, the second , wrote to a man, T was informed of your suffering from the death of your son, Ali. I was also informed that he was the most beloved among your sons to you. It so happens that Allah, the Most Majestic, the Most Glorious, takes away from a father or other people the most beloved to his people so as to increase their reward for their suffering. May Allah increase your reward, grant you patience and strengthen your heart; He is Most powerful. May Allah very soon grant you one to replace him and I hope that Allah has already made it happen.’” 