When Prophet Yunus (AS) was swallowed by the whale, he found himself in three layers of darkness: the darkness of night, the darkness of the sea, and the darkness of the whale's belly. From the deepest place a human being has ever been, he called out a single sentence — and Allah promises in the Qur'an that He will answer the same dua for any believer who calls Him in distress.
The dua of Yunus (AS)
لَا إِلَٰهَ إِلَّا أَنْتَ سُبْحَانَكَ إِنِّي كُنْتُ مِنَ الظَّالِمِينَ
La ilaha illa Anta subhanaka inni kuntu minaz-zalimin.
There is no god but You, glory be to You — indeed, I have been among the wrongdoers.
(Surah al-Anbiya 21:87)
Allah's own promise about this dua
And [mention] the man of the whale, when he went off in anger and thought We would not decree [anything] upon him. And he called out within the layers of darkness: 'There is no god but You, glory be to You — indeed, I have been among the wrongdoers.' So We answered him and saved him from the distress. And thus do We save the believers.
The Prophet ﷺ said about this exact dua: 'The supplication of my brother Dhun-Nun (Yunus) — none who is in difficulty calls upon Allah with it without Allah answering him' (Jami at-Tirmidhi 3505, graded Sahih).
What the dua really does
The dua does three things in one short line: it affirms Allah's oneness (la ilaha illa Anta), it glorifies Him beyond every human assumption (subhanak), and it confesses one's own wrongdoing (inni kuntu minaz-zalimin). It is the perfect formula for return to Allah — tawhid, tasbih and tawbah in eleven words.
When to recite it
- When facing any worldly distress — illness, debt, fear, oppression, family difficulty, loss.
- Hundreds of times in private — the more sincere the repetition, the heavier the dua.
- In sujud — the closest a person is to Allah is in prostration (Sahih Muslim 482).
- In the last third of the night, when Allah descends to the lowest heaven and asks: 'Is anyone calling Me, that I may answer?' (Sahih al-Bukhari 1145).
Reference
The dua is from Surah al-Anbiya (21:87), with Allah's promise of acceptance in the next verse (21:88). The Prophet's ﷺ statement about it is in Jami at-Tirmidhi (3505) on the authority of Sa'd ibn Abi Waqqas (RA), graded Sahih.