Quran 10:97 — Jonah (Younus)

No matter what kind of proof you show them, (they cannot believe), until they see the painful retribution.

[10:96] Surely, those condemned by a decree from your Lord cannot believe.

[10:98] Any community that believes will surely be rewarded for believing. For example, the people of Jonah: when they believed, we relieved the humiliating retribution they had been suffering in this world, and we made them prosperous.