{las nyon gyi rgyu las byung ba'i cha nas kun 'byung gi bden pa zhes su rnam par bzhag go} They arise from the causes of karmic actions and disturbing emotions which are, therefore, defined as the 'truth of origin'.
truth of origin; truth of all-pervasive origin (of suffering); Def: by Jamgön Kongtrül: {ngo bo ni/ 'byung 'gyur nyer len gyi phung po'i rgyur gyur pa'i las nyon rnams so}