١ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنْ مُحَمَّدِ بْنِ سِنَانٍ عَنْ طَلْحَةَ بْنِ زَيْدٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ كَانَ أَبِي (عَلَيهِ السَّلام) يَقُولُ مَا مِنْ شَيْ‏ءٍ أَفْسَدَ لِلْقَلْبِ مِنْ خَطِيئَةٍ إِنَّ الْقَلْبَ لَيُوَاقِعُ الْخَطِيئَةَ فَمَا تَزَالُ بِهِ حَتَّى تَغْلِبَ عَلَيْهِ فَيُصَيِّرَ أَعْلاهُ أَسْفَلَهُ.
1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from Muhammad ibn Sinan from Talhah ibn Zayd from Abu ‘Abdillah  who has said the following: “My father would say, ‘There is nothing more destructive to the heart than sins. The heart falls on sins and remains that way until sins subdue it and then it turns upside down.’” 