Mandukya Upanishad is part of the Mandukya Karika. Gouda Padha, Shankaracharya's Guru's Guru, has written a commentary called Karika verses. There was only one mantra about waking, one about dreaming and why two mantras about deep sleep? The fifth mantra and the sixth mantra will talk about two aspects. In each of these, there is an individual, a baker, you, an entire universe, the cosmic aspect. consciousness associated with your body and mind. Here was called Vishwa. Consciousness associated with the entire universe was called Vaishwana or Virat. And here you would be called Tijasa. Now
Swami Sarvapriyananda teaches one of the shortest and most profound upanishads accompanied by Gaudapada's Karika. This lecture covers Mantra 5-6.