u 'Alaykum wa Rahmatullahi wa Barakatuhu
One day Sayyidina Rasool Salla Allahu ta'ala 'alayhi wa Sallam were sitting in the Masjid in Madinatul Munawwarah and Hazrat Jibreel Alaihi Salaam came to him and said: "Allah Subhanahu wa Ta'ala has sent His salaams to you and He has also sent a gift of the Dua' Noor to you and your Ummah. This Dua' was not sent to the earlier Ummah's but it has been sent to your Ummah so that this can be a means of forgiveness [maghfirah] for this Ummah. A person who recites or keeps this Dua with him will live a good life in this world and he will die with Imaan[ true faith] On the Day of Judgement his face will shine like the full moon of the fourteenth night. When the other people see this person on the Day of Judgement they will think he is a Prophet or Wali [friend] of Allah Subhanahu wa Ta'ala. They will be told that this person is one of the Ummati of Muhammad Salla Allahu ta'ala 'alayhi wa Sallam and that this distinction has been given to him by virtue of his having recited Dua' Noor. Now it is incumbent upon all the Muslims to spread this Dua and not be stingy.
Whoever recites this Dua will not be under any debt and will not be sick. He will always prosper and will be healthy. He will be away from sorrow and cruelty of the cruel rulers. If he goes for Jihad he will be victorious. The swords, arrows and guns will not effect him. If he goes on a journey he will come back safe and sound. Whoever keeps this Dua' with him Allah Subhanahu wa Ta'ala will bestow his Rahmah on such a person.