Which is the principle of insurance which states that the insured should not be allowed to make any profits from the claim? Is it subrogation? If not, can you explain the principle of subrogation with an example?

it is the law of idemnity which states that insurance is not done fr the purpose of making profit...

acc to subrogation principle..after paying the compensation the insurer will be the owner of the property for which he had compensated to the insured.this is done to ensure that insured will not be able to make profit by selling the damaged Property.