Jibrīl kept enjoining me regarding the good treatment of the neighbor to the extent that I thought he would inherit him

The Prophet (may Allah's peace and blessings be upon him) informs that Jibrīl continued to instruct him that the neighbor, who lives next to one's house, be he a Muslim or a disbeliever, should be taken care of, not hurt, and treated kindly, his rights should be observed, and harm from them should be endured, to the extent that the Prophet (may Allah's peace and blessings be upon him) thought, due to the great attention given to the neighbor's rights and Jibrīl's repeated instruction about this, that there will come down revelation that gives his neighbor part of his inheritance after his death.