١ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ وَسَهْلِ بْنِ زِيَادٍ جَمِيعاً عَنِ ابْنِ مَحْبُوبٍ عَمَّنْ ذَكَرَهُ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ التَّوَاصُلُ بَيْنَ الإخْوَانِ فِي الْحَضَرِ التَّزَاوُرُ وَفِي السَّفَرِ التَّكَاتُبُ.
1. A number of our people have narrated from Ahmad ibn Muhammad from Sahl ibn Ziyad all from ibn Mahbub from those whom he has mentioned (in his book) from Abu ‘Abdillah  who has said the following: “To maintain contact with friends in the town is by visiting, on a journey and out of town by correspondence.” 