Albert Barnes Commentary Psalms 49:9

"That he should still live alway, That he should not see corruption." — Psalms 49:9 (ASV)

That he should still live for ever - That his brother whom he could not redeem - or that he himself - should not die (Psalms 49:8). The idea is, that the price of life is so great that no wealth can rescue it so that a man shall not die.

And not see corruption - Should not return to dust, or moulder away in the grave. See the notes at (Psalms 16:10).