prayogaḥ ye yadbhāvaṃ pratyanapekṣās te tadbhāvaniyatāḥ / yathā samantanantaraphalā sāmagrī svakāryotpādane niyatā /
The formal argument is: Those which are independent with respect to a certain condition are permanently connected to that condition, just as the totality of causes producing immediate effects is permanently connected to [the production of] its own effect.