puraḥsthite 'pi puṃsi syāt kathaṃ tava viniścayaḥ / nāyaṃ sarvajñaḥ ityevambhāve 'tīndriyavidbhavān //
Even if a person were standing before you, how could you have certainty that "this one is not omniscient"? If you had such knowledge, you would be perceiving what is beyond the senses!