Sa’d ibn Waqas (radiAllahu anhu) reported that the Prophet (salAllahu allayhi wasalam) said

Sa’d ibn Waqas (radiAllahu anhu) reported that the Prophet (salAllahu allayhi wasalam) said, “The supplication made by the Companion of the Fish (Prophet Yunus (as)) in the belly of the fish was (the above). If any Muslim supplicates in the

se words, his supplication will be accepted/responded to.”
In another report we read, “I know words that will cause Allah to remove one’s distress. These are the words (of supplication) of my brother Yunus, peace be upon him”
[at-Tirmidhi; 3500, an-Nisa'i in `Amal al-yawmi wa al-layla; #656, al-Hakim 1:505 and 2:383.