thanks remm... cool!
thank you for this /\ , you quoted...
"If people wish to fully understand,
All Buddhas of the Three Periods of Time,
They should contemplate the nature of the Dharma Realm,
EVERYTHING is made MIND ALONE"
though a statement like this above can only be said with conviction once the Self nature is seen (Buddha Nature)... there were among the Zen Patriarchs those who went beyond Mind to the state where they no longer had buddha nature... the term Icchantika was turned into the highest attainment. Icchantika in the sense that this buddha had now relinquished all buddha nature.
one of the patriarchs says "I am like this". his master says to him "I am not like this." anyone knowing about dharmakaya or suchness knows that dharma kaya is 'just like this', things as they are. When the old patriarch said this to his predecessor there must have been some surprise.
to become Icchantika is to completely extinguish Mind, which is Buddha Nature in its purest form. One cannot extinguish Mind unless one knows it, therefore to become Icchantika is only accessible to a Buddha that has transcended emptiness and appreciated the realm of pure Mind.
the boddhisatva Icchantika was called the Acchantika, but as to the Name of the Buddha that became Icchantika/without Buddha nature - im not sure there is a term. Great Master Keizan of the Soto still uses the term Icchantika to describe this great being that has surpassed even the Buddhas.
unsurprising that a somewhat derogotory term as Icchantika could be appropriated for a state beyond Buddhahood.