It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: Hazrat Jibreel (peace be upon him) continued to advise me to treat the neighbor well so persistently that I began to think he would soon make him an heir.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7522
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن.