The author of Mafatih al-Jinan, Shaykh Abbas al-Qummi (d. 1941 CE) says about this supplication: 'This is one of the famous supplications. ʿAllāma al-Majlisī says that it is the best of all supplications, which ʾAmīr al-Muʾminīn Ali (as) taught to Kumayl, who was one of his select disciples. It is recited during nights of the middle of Sha'ban and every Thursday evening. It is useful for protecting against the evil of enemies, opening the gate of one's daily bread, and forgiving sins.”
بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ
bismillāh al-raḥmān al-raḥīm
In the Name of Allah, the All-merciful, the All-compassionate