Quran 39:40 — The Throngs (Al-Zumar)

"(You will find out) who has incurred shameful punishment, and has deserved an eternal retribution."

[39:39] Say, "O my people, do your best and I will do my best; you will surely find out.

[39:41] We have revealed the scripture through you for the people, truthfully. Then, whoever is guided is guided for his own good, and whoever goes astray goes astray to his own detriment. You are not their advocate.