Samayasara - by Acharya Kundakunda: Auxiliary Causal Relationship Of Dravya Karma And Bhāva Karma

edesu hedubhūdesu kammaiyavaggaṇāgadaṃ jaṃ tu.
pariṇamade aṭṭhavihaṃ ṇāṇāvaraṇādibhāvehiṃ..67

taṃ khalu jῑvaṇibaddhaṃ kammaiyavaggaṇāgayaṃ jaiyā.
taiyā du hodi hedū jῑvo pariṇāmabhāvāṇaṃ.. 68

(Edesu hedubhūdesu) As a result of the auxiliary causal potency of the aforementioned rise of perversion (bhāva karma) and the like (kammaiyavaggaṇāgadaṃ) the attracted karmic matter (jaṃ tu pariṇamade) mutates and becomes (aṭṭhavihaṃ ṇāṇāvaraṇādi bhāvehiṃ) eight main species of karma viz., knowledge obscuring and the like.

(Taṃ kammaiyavaggaṇāgadaṃ jaiya khalu) And when the karmic matter (jῑvaṇibaddliaṃ) becomes bonded with the soul, then surely (taiyā du) at that instant (jῑvo pariṇāmabhāvāṇaṃ hedu hodi) the soul mutates and determines its own bhāva karma (in the form of perverted belief etc. as a result of the auxiliary potency of the dravya karma).