Al-Kāfi - Volume 2 > Envy
Hadith #1

1ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ مَحْبُوبٍ عَنِ الْعَلاءِ بْنِ رَزِينٍ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ قَالَ قَالَ أَبُو جَعْفَرٍ (عَلَيهِ السَّلام) إِنَّ الرَّجُلَ لَيَأْتِي بِأَيِّ بَادِرَةٍ فَيَكْفُرُ وَإِنَّ الْحَسَدَ لَيَأْكُلُ الإيمَانَ كَمَا تَأْكُلُ النَّارُ الْحَطَبَ.

1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from al-‘Ala’ ibn Razin from Muhammad ibn Muslim who has said the following: “Abu Ja’far (a.s.) has said, ‘The man may hastily commit any evil deed and then (gradually) turn in disbelief, however, envy consumes belief (immediately) just as fire consumes firewood.”