Al-Adab Al-Mufrad, Hadith 101 ⓘ
'A'isha reported that the Prophet, may Allah bless him and grant him peace, said, "Jibril, may Allah bless him and grant him peace, kept on recommending that I treat neighbours well until I thought that he would order me to treat them as my heirs."
حَدَّثَنَا إِسْمَاعِيلُ بْنُ أَبِي أُوَيْسٍ قَالَ: حَدَّثَنِي مَالِكٌ، عَنْ يَحْيَى بْنِ سَعِيدٍ قَالَ: أَخْبَرَنِي أَبُو بَكْرِ بْنُ مُحَمَّدٍ، عَنْ عَمْرَةَ، عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ: مَا زَالَ جِبْرِيلُ صلى الله عليه وسلم يُوصِينِي بِالْجَارِ حَتَّى ظَنَنْتُ أَنَّهُ سَيُوَرِّثُهُ.
also referenced under: Book 6, Hadith 1 (In-Book) & Book 6, Hadith 101 (English)