The 3rd and 4th verse of the Kenopanishad:
na tatra cakṣurgacchati na vāg gacchati no manaḥ
na vidmo na vijānīmo yathaitadanuśiṣyāt || 3 ||
anyadeva tadviditādatho aviditādadhi
iti śuśruma pūrveṣāṁ ye nastad vyācacakṣire || 4 ||
Listen, the literal translation of the verse.
Where the eyes goes not, the speech goes not, nor the mind and intellect, we do not know, we do not understand, how that Reality, Consciousness can be taught, it is distinct from the known, as it is far beyond man’s finite objective nature, that is, what the mind eyes ears or speech, the senses can perceive and it is beyond the unknown as it can be known by man’s divine infinite subjective nature. Thus we have heard from the ancient masters who revealed and explained that to us.