٤ـ عَنْهُ عَنْ مُحَمَّدِ بْنِ عَلِيٍّ عَنِ النَّضْرِ بْنِ شُعَيْبٍ عَنْ أَبَانِ بْنِ عُثْمَانَ عَنِ الْحَسَنِ بْنِ السَّرِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ لا تَكْتُبْ دَاخِلَ الْكِتَابِ لأبِي فُلانٍ وَاكْتُبْ إِلَى أَبِي فُلانٍ وَاكْتُبْ عَلَى الْعُنْوَانِ لأبِي فُلانٍ.
4. It is narrated from him (narrator of the Hadith above) from Muhammad ibn Ali from al-Nadr ibn Shu’ayb from Aban ibn ‘Uthman from al-Hassan ibn al-Sari from Abu ‘Abdillah  who has said the following: “Do not write in the letter: ‘For abu so and so’ but write ‘To abu so and so’. In the address area one should write, ‘For abu so and so’.” 