8.16 Even heaven sends you back Krishna speaks

आब्रह्मभुवनाल्लोकाः पुनरावर्तिनोऽर्जुन
मामुपेत्य तु कौन्तेय पुनर्जन्म न विद्यते

ā-brahma-bhuvanāl lokāḥ punar āvartino ’rjuna
mām upetya tu kaunteya punar janma na vidyate

All worlds up to the world of Brahma return again, Arjuna. But having come to me, son of Kunti, there is no rebirth.

Explanation

Even the highest heaven returns you.

ābrahma-bhuvanāt — up to the world of Brahma. The most exalted destination reachable by merit is still inside the cycle.

This is a deliberate demotion of everything the tradition offered as a reward. Reaching a better world is not the goal, because better worlds end. The chapter is drawing a line between going somewhere good and going past the mechanism that makes places come and go at all.

Word by word

ā-brahma-bhuvanāt: up to the abode of Brahma
lokāḥ: worlds
punaḥ āvartinaḥ: subject to rebirth
arjuna: Arjun
mām: mine
upetya: having attained
tu: but
kaunteya: Arjun, the son of Kunti
punaḥ janma: rebirth
na: never
vidyate: is