'karmically advantageous' or 'profitable', salutary,
morally good, (skillful)
Connotations of the term, according to Com. (Atthasālini),
are: of good health, blameless, productive of favourable karma-result, skillful.
It should be noted that Com. excludes the meaning 'skillful', when the term is
applied to states of consciousness.
It is defined in M.9 as the 10 advantageous courses of action
(s. kammapatha). In psychological terms, 'karmically advantageous' are all
those karmical intentions (kamma-cetanā) and the consciousness and mental
factors associated therewith, which are accompanied by 2 or 3 advantageous roots
(s. mūla), i.e. by greedlessness (alobha) and hatelessness (adosa),
and in some cases also by non-delusion (amoha: wisdom,
understanding). Such states of consciousness are regarded as 'karmically
advantageous' as they are causes of favourable karma results and contain the seeds
of a happy destiny or rebirth. From this explanation, two facts should be noted:
(1) it is intention that makes a state of consciousness, or an act, 'good' or
(2) the moral criterion in Buddhism is the presence or absence of the 3
advantageous or moral roots (s. mūla).
The above explanations refer to mundane (lokiya, q.v.)
advantageous consciousness. Supermundane advantageous (lokuttara-kusala) states,
i.e. the four paths of sanctity (s. ariyapuggala), have as results only
the corresponding four fruitions; they do not constitute karma, nor do they lead
to rebirth, and this applies also to the good actions of an Arahat (Tab. I,
73-80) and his meditative states (Tab. 1, 81-89), which are all karmically
inoperative (functional; s. kiriya).
Kusala belongs to a threefold division of all
consciousness, as found in the Abhidhamma (Dhs.), into
the first of the triads (tika) in the Abhidhamma schedule (mātikā); s.
Guide, pp. 4ff., 12ff; Vis.M. XIV, 83ff.