Sahih Muslim · Hadith 6854
The Book of Virtue; Good Manners and Joining of the Ties of Relationship - كتاب البر والصلة والآداب
حدثني عبيد الله بن عمر القواريري، حدثنا يزيد بن زريع، عن عمر بن محمد، عن أبيه، قال سمعت ابن عمر، يقول قال رسول الله صلى الله عليه وسلم " ما زال جبريل يوصيني بالجار حتى ظننت أنه سيورثه " .
Ibn Umar reported Allah's Messenger (may peace be upon him) as saying: Gabriel impressed upon me (the kind treatment) towards the neighbour (so much) that I thought as if he would soon confer upon him the (right) of inheritance.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).