مُحَمَّدُ بْنُ يَحْيَى عَنْ عَلِيِّ بْنِ إِبْرَاهِيمَ الْجَعْفَرِيِّ عَنْ حَمْدَانَ بْنِ إِسْحَاقَ قَالَ كَانَ لِيَ ابْنٌ وَ كَانَ تُصِيبُهُ الْحَصَاةُ فَقِيلَ لِي لَيْسَ لَهُ عِلَاجٌ إِلَّا أَنْ تَبُطَّهُ فَبَطَطْتُهُ فَمَاتَ فَقَالَتِ الشِّيعَةُ شَرِكْتَ فِي دَمِ ابْنِكَقَالَ فَكَتَبْتُ إِلَى أَبِي الْحَسَنِ الْعَسْكَرِيِّ ( عليه السلام ) فَوَقَّعَ ( عليه السلام ) يَا أَحْمَدُ لَيْسَ عَلَيْكَ فِيمَا فَعَلْتَ شَيْ‏ءٌ إِنَّمَا الْتَمَسْتَ الدَّوَاءَ وَ كَانَ أَجَلُهُ فِيمَا فَعَلْتَ .
6. Muhammad ibn Yahya has narrated from Ali ibn Ibrahim al-Ja‘fariy from Hamdan ibn Ishaq who has said the following: “I had a son who had bladder (kidney) stone and it was said to me that it has no medicine except operating and I operated, then the child died. The Shi’ah said, ‘You have caused the death of your son. I then wrote to abu al-Hassan al-‘Askariy . He (the Imam) signed the answer that said, ‘O Ahmad, you are not responsible for what you have done. You tried to cure him and his death (the appointed time) was in what you did.”’ 