narān dṛṣṭvā svasarvajñān sarvānevādhunātanān / sādṛśyasyopamānena śeṣāsarvajñaniścayaḥ //
Having observed that all present-day men are non-omniscient, through analogy based on [this] similarity, [one reaches] the certainty that all other [men of past and future] are non-omniscient.