Ibn Tawus in his book “Muhaj al Dawat” and “Kafami” in his book “Misbah” narrate this dua’a on the authority of Imam Ali ibn abi Talib, who learned it from the holy Prophet.
The holy prophet advised him to recite this dua regularly, whether in prosperity or poverty, till death, because it unveils the secrets of creation and divine strategy. words can not describe its merits. Intelligent cannot describe its meanings. no sooner someone begins to recite it, Alimighty Allah sends blessings, and his mercy surrounds him, peace and tranquility descend upon descend upon him.
If recited on forty Fridays consecutively all sins are forgiven. It cures sickness and disperses sorrows. For him who recites it before going to sleep, Allah appoints one thousand angels to pray for him till morning. He who recites it and dies within 24 hours, is treated like a martyr. It is recommended that it be performed with ablution.