Sa'd reported God’s messenger as saying that no Muslim will supplicate God for anything and fail to receive an answer when he uses Dhun Nun’s supplication when he was in the belly of the fish:“There is no god but Thee to whom be the glory. I was indeed a wrongdoer.” [Qur'an, xxi, 87] Ahmad and Tirmidhi transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الدعوات / 2292
Hadith Gradingالألبانی:لم تتمّ دراسته | زبیر علی زئی:إسناده صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده صحيح، رواه أحمد (170/1ح 1462) و الترمذي (3505)»