Text 18 

tvam aksharam paramam veditavyam
tvam asya vishvasya param nidhanam
tvam avyayah sasvata-dharma-gopta
sanatanas tvam purusho mato me

Translation

You are the supreme primal objective. You are the ultimate resting place of all this universe. You are inexhaustible, and You are the oldest. You are the maintainer of the eternal religion, the Personality of Godhead. This is my opinion.

Commentary by Srila Prabhupada

No comentary by Srila Prabhupada.

Commentary by Sri Visvanatha Cakravarti Thakur

You are known by the strivers for liberation as brahman (aksaram). You are the place of destruction of all (nidhanam).