Hammu is the embodiment of the Law domain, and has not shared it with any other gods.
The Law Domain is closely associated with the domain of Justice. Law encompasses mortal codes and mores in an attempt to unify the creatures of creation.The god of law may occasionally call mortals forth as crusaders to right some injustice.
This domain is in direct contrast to the Chaos domain. Law does not abide chaos and anarchy.
Mortals belonging to the most honorable professions may pray to the god of law.