If he doesn't have more than the 3rd party compulsory insurance via his registration he may find it very difficult to do much at all as I believe he is only insured for injury rather than damage. I may be wrong. How much will it take to fix the vehicle? Has he paid for third party insurance? If so, he should call his insurance company as a matter of priority to check his policy and ask for advice regarding compensation, assuming it was not his fault.
