Al-Kāfi

Hadith 2315
backbiting-slander
2ـ وَعَنْهُ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ جَمِيلِ بْنِ دَرَّاجٍ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ حَدُّ الْجِوَارِ أَرْبَعُونَ دَاراً مِنْ كُلِّ جَانِبٍ مِنْ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِ وَعَنْ يَمِينِهِ وَعَنْ شِمَالِهِ.
2. It is narrated from him (narrator of the Hadith above) from his father from Ibn Abi ‘Umayr from Jamil ibn Darraj from abu Ja’far (a.s.) who has said the following: “The limits of a neighborhood are forty houses on all sides, front, back, right and left.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī