Buddha Abhidhamma - Ultimate Science - BuddhaNet

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Soka (worry or sorrow) is the unpleasant feeling (domanassavedanà)
present in the 2 dosa-måla cittas.
Parideva (lamentation) is cittaja-vipallàsa-sadda-råpa which
means mind-produced-reversal sound.
Dukkha (pain) is the vedanà-cetasika associated with dukkhasahagata
kàya-vi¤¤àõa citta.
Domanassa (grief) is the vedanà-cetasika associated with the
2 dosa-måla cittas.
Upàyàsà (despair) is the resentment produced by excessive
mental suffering. It is anger (dosa) present in the 2 dosa-måla cittas.
A comparison between grief, lamentation and despair states that
grief is like the boiling of oil in a vessel; lamentation (viz., the
outward expression of grief) is like the overflow (boiling over)
from the vessel when the cooking is done by a fierce fire; despair
is like the simmering in the vessel of what remains after boiling
over until it is all boiled away.
Some Notable Aspects of the Law
In the Law of Dependent Origination, twelve factors (aïga), three
periods (kàla), twenty modes (àkàra), three connections (sandhi),
four abridgments (saïkhepa), three rounds (vañña) and two roots
(måla) should be taken into consideration.
1 Twelve Factors (Aïga)
Avijjà, saïkhàra, vi¤¤àõa, nàma-råpa, saëàyatana, phassa, vedanà,
taõhà, upàdàna, bhava, jàti, jarà-maraõa.
2 Three Periods (Kàla)
1 Past – avijjà, saïkhàra
2 Present – vi¤¤àõa, nàma-råpa, saëàyatana, phassa, vedanà,
taõhà, upàdàna, kamma-bhava
3 Future – jàti, jarà-maraõa.