Sometimes a person does not notice the harm their actions cause. Rather than dismissing a complaint, it is better to investigate fairly and remove avoidable harm. Neighborly rights involve both fairness and cooperation.
Example: Water leaks through a shared wall. When the other household reports it, the responsible party should examine the problem and arrange appropriate repairs rather than blaming the complainant.
The suffix هُ in بَوَائِقَهُ refers to the person whose harms are feared. The same possessive suffix appears in جَارُهُ, linking the neighbor and the responsibility in one sentence.