On Eka-ātma-pratyaya-sāram

After all the neti neti of Mandukya 7, this all-important positive line appears. Here are various translations: 

whose valid proof consists in the single belief in the Self 

~Gambhirananda 

The essence of the Consciousness manifesting as the self [in the three states] 

~Nikhilananda 

As one whose essence is the perception of itself alone 

~Olivelle 

 essentially of the Self alone 

~Chinmayananda 

 Always experienced as the unbroken “I-sense,” 

~Swartz 

The only proof of His existence is union with Him 

~Yeats & Purohit 

The essence of the assurance of which is the state of being one with the Self 

~Hume 

Essence of self knowledge 

~Raphael 

The essence of its certainty is the one Self.  

~Jones 

 

Essentially one-pointed self-awareness,  

~aumdada