Werset 2.152.12.22.32.42.52.62.72.82.92.102.112.122.132.142.152.162.172.182.192.202.212.222.232.242.252.262.272.282.292.302.312.322.332.342.352.362.372.382.392.402.412.422.432.442.452.462.472.482.492.502.512.522.532.542.552.562.572.582.592.602.612.622.632.642.652.662.672.682.692.702.712.72

That firm man whom, surely, these afflict not, O chief among men, to whom pleasure and pain are the same, is fit for attaining immortality.

The steady person whom these do not disturb, best among men, who stays the same in pain and in pleasure, becomes fit for immortality.

Krishna names the reward of endurance. A person who is not shaken by pleasure and pain, who remains the same in both and is steady (dhīra), becomes fit for amṛtatva, immortality or deathlessness. The word can be read as freedom from the round of birth and death (saṃsāra), or as a realisation of what in us already does not die. The verse links the ethical discipline of the previous verse to the highest goal, showing that inner evenness is not merely a coping skill but a path to liberation.