Surah Al-Anbiya' (The Prophets), Verse 87

وَذَا النُّوْنِ اِذْ ذَّهَبَ مُغَاضِبًا فَظَنَّ اَنْ لَّنْ نَّقْدِرَ عَلَیْهِ فَنَادٰی فِی الظُّلُمٰتِ اَنْ لَّاۤ اِلٰهَ اِلَّاۤ اَنْتَ سُبْحٰنَكَ اِنِّیْ كُنْتُ مِنَ الظّٰلِمِیْنَ ۟

Wa Zan Nooni iz zahaba mughaadiban fa zannaa al lan naqdira 'alaihi fanaadaa fiz zulumaati al laaa ilaaha illaaa Anta Subhaanaka innee kuntu minaz zaalimeen

“And remember Zun-nun, when he departed in wrath: He imagined that We had no power over him! But he cried through the deptHs of darkness, "There is no god but thou: glory to thee: I was indeed wrong!"”

Quran 21:87 (Yusuf Ali Translation)