Buddhist-Meditation-Systematic-and-Practical

When the hermitage-vajra is visualized as the head, the
other three may be taken as the limbs. The fourth size
(Dharmadhatu), the bodhicitta, and the sambhogakaya
(from the human body size) all co-exist and function
simultaneously.
Finally, if the ultimate size of the Dharmadhatu is the
main source, the other three being subordinate to it, the
net of Indra is visualized, forming a vast macrocosm of
the Buddha-world. The functions are: one as many,
many as one; unity and separation; functions beyond all
three yet in them all; extensive and intensive; beneath
yet manifested; abstract and concrete; present yet within
past and future. One minute includes all three periods of
time. Thus the powers of the Buddha working for
salvation are uninhibited by time or space. The highest
theories of exoteric philosophy and the highest Tantric
practices (six-element yoga) here are achieved, and all
four sizes of vajra-mind—the third form—function
together, interpenetrating and, finally, harmonized.
No matter how powerful the vajra may be and how
excellently a meditator may practice, it does not
function as a voice for preaching. That is why the vajra
is always accompanied by the vajra-bell. The meditator
may ask, "Who will hold this powerful couple of vajra
and bell?" The practice of personification of the
Buddha-body should be performed next. Then, the
Buddha again calls the attention of the meditator. This is
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