وَذَا النُّونِ إِذ ذَّهَبَ مُغَاضِبًا فَظَنَّ أَن لَّن نَّقْدِرَ عَلَيْهِ فَنَادَىٰ فِي الظُّلُمَاتِ أَن لَّا إِلَٰهَ إِلَّا أَنتَ سُبْحَانَكَ إِنِّي كُنتُ مِنَ الظَّالِمِينَ

This verse recounts Prophet Jonah's (Yunus) experience when he left his people in anger before receiving Allah's permission, was swallowed by a whale, and found himself in multiple layers of darkness (night, sea, and whale's belly). His prayer from this desperate situation contains three elements: declaration of Allah's oneness (La ilaha illa anta), glorification of Allah (Subhanaka), and acknowledgment of his own wrongdoing (inni kuntu min az-zalimin). This prayer demonstrates perfect repentance - recognizing Allah's sovereignty, praising Him despite personal distress, and taking responsibility for one's mistakes. The "darknesses" represent both physical and spiritual crisis. This teaches that sincere repentance can reach Allah from any situation, that acknowledging our mistakes is essential for forgiveness, and that even prophets needed to seek Allah's forgiveness when they erred. The prayer became a model for seeking Allah's help during extreme difficulties.