tataś ca tadānīṃ sannihitenāpyasarvavidā yenaiva sarvajño nāvadhāryate, taṃ prati sarvajñavākyānām api satāmaniścitatvād aprāmāṇyam eva, mūlasya prāmāṇyaniścayakāraṇasya sarvajñajñānaniścayasyābhāvāt
Therefore, even for one who was present at that time, if he is not omniscient, by whom the omniscient one cannot be ascertained, for him even the statements of omniscient beings, though existent, [must remain] uncertain and thus unreliable, due to the absence of ascertainment of the omniscient one's knowledge, which is the root cause for ascertaining reliability