Al-Anbya 21:87
وَذَا ٱلنُّونِ إِذ ذَّهَبَ مُغَـٰضِبًا فَظَنَّ أَن لَّن نَّقْدِرَ عَلَيْهِ فَنَادَىٰ فِى ٱلظُّلُمَـٰتِ أَن لَّآ إِلَـٰهَ إِلَّآ أَنتَ سُبْحَـٰنَكَ إِنِّى كُنتُ مِنَ ٱلظَّـٰلِمِينَ
Watha annooni ith thahabamughadiban fathanna an lan naqdira AAalayhifanada fee aththulumatian la ilaha illa anta subhanaka inneekuntu mina aththalimeen
"And [mention] the man of the fish [i.e., Jonah], when he went off in anger and thought that We would not decree [anything] upon him. And he called out within the darknesses, "There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers.""
Al-Anbya 21:87, translation by Sahih International
A short reflection
There is no god except You — glory be to You — indeed I have been among the wrongdoers. The dua of Yunus.