Buddha Abhidhamma - Ultimate Science - BuddhaNet

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2 Vacã-vi¤¤atti – movement of the mouth to produce
speech to let others understand one’s intentions.
Kàya-vi¤¤atti and vacã-vi¤¤atti are caused by the vàyo-dhàtu
produced by the mind, and they last only for one consciousmoment.
Five Vikàra-råpas (Material Qualities of Mutability)
Ledi Sayadaw explained ‘vikàra-råpa’ as ‘peculiar distinctive
condition’. Venerable Narada took it as “changeability of råpa.”
So we may regard ‘vikàra-råpa’ as special condition of råpa.
1 Råpassa-lahutà – physical lightness or buoyancy; it
suppresses the heaviness in the body.
2 Råpassa-mudutà – physical elasticity; it removes stiffness
in the body and is comparable to a well-beaten hide.
3 Råpassa-kamma¤¤atà – physical adaptability; it is
opposed to the stiffness of the body, and is comparable
to well-hammered gold.
These three råpas together with the two vi¤¤atti-råpas make
up five vikàra-råpas.
Four Lakkhaõa-råpas (Material Qualities of Characteristics)
There are three common characteristics of råpa and nàma-viz.,
arising (uppàda), existing (thãti) and dissolving (bhaïga). The råpas
that denote these instants in real råpas are called lakkhaõa-råpas.
‘Lakkhaõa’ literally means ‘sign or symbol’.
1 Upacàya-råpa – arising of råpa at the moment of
conception, and continued arising of råpa till the
required råpas in life are completely formed.
2 Santati-råpa – subsequent arising of råpas throughout
the life-term.