prayogaḥ yatra yadbhāvasiddhau kiñcit pramāṇam asti parasya yena tadvyavahāraḥ prekṣāvatā kāryaḥ, yathā vahnau śītavyavahāraḥ / nāsti ca buddhidehayoḥ kāryakāraṇabhāvasiddhau kiñcit pramāṇam iti vyāpakānupalabdhiḥ
The formulation is: Wherever there exists some proof for establishing something's existence for the opponent, based on which a usage should be adopted by a rational person - as [for example] the usage of [the word] "cold" with reference to fire - [but] there exists no proof for establishing a cause-effect relationship between cognition and body, this constitutes non-apprehension of the pervader.