kāmaśokādivitarkeṇa ca manasyupahate dehavikāradarśanāddehasyāpi tadupādānatāprasaṅgāt kintu niyamena sākṣāc ca yasyaiva yo vikāramanuvidhatte sa tadupādāno yuktaḥ /
And when the mind is afflicted by thoughts of desire, grief and such, bodily modifications are observed - [but] this would [absurdly] lead to [considering] the body as having the mind as its material cause; rather, only that which directly and invariably follows another's modifications can reasonably be its material cause.