The eighth kind of kriyā (sthāna);
that propensity of passion, which arises only due to internal cause without any of external cause.
kei purise... sayameva hīṇe dīne... tassa ṇaṃ ajjhatthiyā asaṃsaiyā cattāri ṭhānā evamāhijjaṃti, taṃ jahā- kohe māṇe māyā lohe. evaṃ khalu tassa tappattiyaṃ sāvajjaṃ ti āhijjai. aṭṭhame kiriyaṭṭhāṇe ajjliatthie tti āhie...
(Sūtra 2.2.10)