Whoever guides someone to good has a reward like the one who does it.
Sahih Muslim · 1893

Prophetic Hadith Dua · 302

لَا إِلَهَ إِلَّا أَنْتَ سُبْحَانَكَ إِنِّي كُنْتُ مِنَ الظَّالِمِينَ.

Lā ilāha illā anta, subḥānaka innī kuntu mina al-ẓālimīn.

There is no deity except You. Glory be to You; indeed, I have been among the wrongdoers.

Forgiveness

Dua 302

How to say it

Lā ilāha illā anta, subḥānaka innī kuntu mina al-ẓālimīn.

The supplication of Yunus عليه السلام, combining tawhid, glorification of Allah, and sincere repentance.

صحيح الترغيب (1644)