The Messenger of Allah (ﷺ) said: When Dhun-Nun (Prophet Yunus) was in the belly of the whale, he said this dua:
لَا إِلَهَ إِلَّا أَنْتَ سُبْحَانَكَ إِنِّي كُنْتُ مِنَ الظَّالِمِينَ
Transliteration
Laa 'ilaaha 'illaa 'Anta subhaanaka 'innee kuntu minadh-dhaalimeen
Translation
There is none worthy of worship but You, glory is to You. Surely, I was among the wrongdoers.
Note
When a Muslim says this dua for anything, Allah answers him. [1]
Remember Allah with these words. Your heart fills with peace. Barakah comes into daily life. Every Muslim feels close to Allah with every word of dhikr and tasbih on the tongue.
Say la ilaha illa anta subhanaka inni kuntu minaz zalimin. It brings peace, hope, and makes your heart feel close to Allah, mostly when you are sad or want forgiveness in Islam.
These words from Surah Ambia mean there is no god but Allah, He is pure, and the person says they made mistakes. It reminds Muslims to ask Allah for help when life is hard.
Ayat e Karima tells Muslims to turn to Allah with a clean heart, ask for forgiveness, and trust that He is kind. It teaches to pray for yourself and others, hoping for Allah's kindness.
The dua is Allahumma innee a'uzubika min alhammi wal huzni... This dua asks Allah to take away sadness, worry, and other hard things in life.
Pray often and remember Allah. It helps the mind feel calm and safe. Make salah and read duas from the Quran every day. Muslims feel better and less worried this way.