In some parts of Travancore, the latter do not even enjoy the privilege of commensality with the other Izhavas.
The rule is a very ancient Semitic one, due to the old connection between sacrifice and commensality.
Among the Greeks the right of commensality, or eating together, was restricted.
commensal com·men·sal (kə-měn'səl)
Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected. n.
An organism participating in a symbiotic relationship in which one species derives some benefit while the other is unaffected.