Ekatma pratthya saaram, split up the word in three parts. Saaram means tracing, a clue, an indicator, again a pointer. There is only one clue, one pointer, one trace which you have to get hold of. What is that? Aatma Pratthya, the self cognition in the form of I. The oneness of the I cognition throughout our lives. That whatever happens all our lives, it is basically you are adding attributes and attributes come and go from childhood till now.
Swami Sarvapriyananda teaches one of the shortest and most profound upanishads accompanied by Gaudapada's Karika. This lecture covers Mantra 7 (Part 2).