avyakto ’kṣhara ityuktas tam āhuḥ paramāṁ gatim
yaṁ prāpya na nivartante tad dhāma paramaṁ mama
That unmanifested, "the Indestructible," It is called; It is named the highest Path. They who reach It return not. That is My supreme abode.
In plain words: That higher unseen reality is called the Indestructible and the highest goal. Those who reach it never come back to this world. Krishna says it is his own supreme home.