IBNMAJAH 3674: from Abū Hurayrah —
"Jibra'il kept enjoining good treatment of neighbours until I thought he would make neighbours heirs."

ابن ماجة ٣٦٧٤: عن ابو هريره —
قَالَ رَسُولُ اللَّهِ ﷺ مَا زَالَ جِبْرَائِيلُ يُوصِينِي بِالْجَارِ حَتَّى ظَنَنْتُ أَنَّهُ سَيُوَرِّثُهُ


Sound (ʿAli Zaʾī)
Ibn Mājah > Etiquette > § The neighbour's rights
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