paras tasmat tu bhavo ‘ nyo
‘ vyakto ‘ vyaktat sanatanah
yah sa sarvesu bhutesu
nasyatsu na vinasyati
(Attaining the Supreme ,Text 20, Chapter 8)
Meaning: Yet there is another unmanifest nature, which is eternal and is transcendental to this manifested and unmanifested matter.It is supreme and is never annihilated. When all in this world is annihilated, that part remains as it is.
Bhagavad Gita: Unmanifest nature of Supreme (Attaining the Supreme,Text 20, Chapter 8)