The Prophet ﷺ said:

"No person suffers any anxiety or grief, and says: "O Allāh, I am Your slave, son of Your slave, son of Your female slave, my forelock is in Your hand, Your command over me is forever executed and Your decree over me is just. I ask You by every Name belonging to You which You named Yourself with, or revealed in Your Book, or You taught to any of Your creation, or You have preserved in the knowledge of the unseen with You, that You make the Qur'ān the life of my heart and the light of my breast, and a departure for my sorrow and a release for my anxiety" except that Allāh will remove his sorrow and grief, and replace it with joy." It was said: O Messenger of Allāh, should we not learn them (these words)? He said: Yes indeed; whoever hears them should learn them." --------------------------------------------------- Narrator: 'Abdullāh ibn Mas'ūd | Source: Musnad Aḥmad (3712) | graded Ṣaḥīḥ by Sheikh Albānī in Silsilah Aṣ-Ṣaḥīḥah (199)