Others should not get involved without being requested to do so. (Being grouped with someone is considered having been requested to get involved.)
Those receiving aid are under no obligation to reward their benefactors.
However, monopolization of a mob and its repops (also called staking) will not be tolerated.
Any disputes regarding this topic brought to the attention of an Immortal for resolution will be handled according to that Immortal's discretion. All such decisions are final.