etad uktaṃ bhavati ekāśrayatve sati satyasya vacasaḥ sarvajñatvaṃ kāraṇaṃ bhavet, nānyathātiprasaṅgāt //
What is meant [here] is this: Only when [truth and omniscience] reside in the same substratum can omniscience be the cause of truthful speech; not otherwise, as [if it were otherwise] there would be undesired consequences.