Namaskaram swamy.
Dasa Upanishads are stated to be principal Upanishads. adiyen read them (more of a glance) recently. Sushumna nadi, details of soul’s journey through the archiradhi marg, bathing in viraja river, 500 apsaras attending the soul, ascending on to Brahmam’s throne, question by Brahmam etc., are clearly explained. But adiyen could not find explicit mention of vaikuntam and Narayanan (as Supreme) in them. I hope, I have not missed it.
I observed Narayanan to be mentioned in upanishads other than Dasa Upanishads.
Is there any explicit mention of Narayanan and vaikuntam in Dasa Upanishads?.
If not, Is there any explicit mention of vaikuntam in other Upanishads?.
Why principal Upanishads do not mention them?.
P.S :: I only want to know the citing in vedas / Upanishads and nothing more. Hence, kindly do not mistake me to be having suspecting nature, since I have posted related queries earlier. The idea of posting this query is to get the clarity from the learned acharya and not doubting on VishishtAdvaitam. I intend to my stop exploration, once I get the details.
adiyen
SriVaishnava dasan