परस्तस्मात्तु भावोऽन्योऽव्यक्तोऽव्यक्तात्सनातनः ।यः स सर्वेषु भूतेषु नश्यत्सु न विनश्यति ॥
parastasmāttu bhāvo'nyo'vyakto'vyaktātsanātanaḥ |yaḥ sa sarveṣu bhūteṣu naśyatsu na vinaśyati ||
But beyond that unmanifest there is another, eternal reality, itself unmanifest, which does not perish when all beings perish.
Explanation
Krishna has just described how all beings emerge at the start of Brahma's day and dissolve at its night, returning to the unmanifest (avyakta). Here he points to a higher, eternal reality beyond even that cycle, which stays untouched when everything else dissolves. Traditions differ on what this is: Advaita readings take it as the formless Brahman, while devotional traditions take it as Krishna's own supreme abode or person.