Buddhist-Meditation-Systematic-and-Practical

3. Visualize the pagoda-diagram
This should be closely studied to understand the various
correspondences and meanings. First, one should know
the five bija: these are the five pearls of the gnosis of
Buddhahood (according to the sutra), or they may be
considered the five hearts of the five Buddhas. When
they are thoroughly practiced, then the bestowal of these
Buddhas is quite easy to obtain. One should also
understand their philosophical meaning:
A, for instance, means the unattainability of that which
is unborn. This is not "nothing," but has a very mystical
meaning difficult to understand unless one has practiced,
a meaning that cannot be taught by a book. The
unattainability means the ungraspable nature of sunyata,
and even though we speak of it like this, still it appears
in different ways.
VI means the unattainability of speech.
LA means the unattainability of purity and impurity.
HUM means the unattainability of karmic causation.
KOM means the unattainability of the equivalence of
the sky.
The actual meaning of this last one is that one does
everything (the emphasis is on action in kriya and carya
Tantras): one has made so many offerings, repeated the
mantra so many times, etc., as to have filled heaven and
earth with these meritorious acts, to have performed so
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