Al-Kāfi
Hadith 13152ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ عَبْدِ الله بْنِ بُكَيْرٍ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ قَالَ رَسُولُ الله (صَلَّى اللهُ عَلَيْهِ وآلِه) سِبَابُ الْمُؤْمِنِ فُسُوقٌ وَقِتَالُهُ كُفْرٌ وَأَكْلُ لَحْمِهِ مَعْصِيَةٌ وَحُرْمَةُ مَالِهِ كَحُرْمَةِ دَمِهِ.
2. A number of our people have narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Husayn ibn Sa’id from Fadalah ibn Ayyub from ‘Abd Allah ibn Bukayr from abu Basir from abu Ja’far (a.s.) who has said the following: “The Messenger of Allah has said, ‘Reviling a believer is a gross sin, fighting him is disbelief, eating his flesh (backbiting) is disobedience and the illegality of consuming his property is like the illegality of spilling his blood (taking his life).”’