A kind of Dravyānuyoga (ontological exposition); exposition with respect to the essential means that contribute to the transformation of a Dravya (substance), resulting in creation of its (new) state.
karanānuogo tti kriyate ebhiriti karanāni tesāmanuyogah karanānuyogah. Tathāhi- jīvadra- vyasya karturvicitrakriyāsu sādhakatamāni kālasvabhavaniyatipūrvakrtāni naikākījīvah kincana karttumalamiti, mrddravyam vā kuldlacakracīvaradandādikam karanakalāpamantarena naghatalaksanam kāryam pratighatata iti tasya tāni karanānīti dravyasya karanānuyogah.
(Sthā 10.46 Vṛ Pa 456)