What is the ruling on inspecting others' unusual belongings that they do not mind being seen, and without ill intent?

It is not permissible to inspect the belongings of others except with their permission, due to the potential for uncovering their faults and prying into their private matters, which are causes of corruption and are prohibited by the act of spying. However, if a person is certain or strongly believes that the owner of the belongings does not object to their inspection, and the intention is not to pry into private matters, then it is permissible. This is because customary permission is equivalent to verbal permission.