prayogaḥ yadā yadavikalakāraṇaṃ tat tadā bhavatyeva, yathā abhimatakṣaṇāvasthāyāṃ agnihotrādivākyasambhūtaṃ jñānam avikalakāraṇaṃ ca vedavākyahetukaṃ sarvajñānaṃ, sarvasyāmavasthāyām iti svabhāvahetuḥ //
The argument [may be stated thus]: Whenever there is an unimpeded cause, its effect must occur - as [for example] the cognition arising from sentences about the Agnihotra etc. at the desired moment; and the Vedic sentences are the unimpeded cause of all [Vedic] cognitions at all times - this is a reason based on essential nature.