ohammad Kulaini (a.r.) and Ibne Babviya (a.r.) have through reliable sources reported Imam Ja’far-e-Sadiq (a.s.) as saying that
he who recites this Dua ten times a every day will be granted the reward equal to that of forty-five thousand good actions, forty-five thousand of his sins will be expunged from his rank in paradise will be raised by forty-five thousand degrees and this Dua will serve as an invincible fortress for him against mischievous and wicked rulers. The recitation of this Dua will also save him from committing major sins. Another source reports that the recitation hereof the Quran twelve times and that a beautiful house will be erected for him in Paradise.
اَشْهَدُ اَنْ لاَ اِلٰهَ اِلاَّ اللهُ وَحْدَهُ لاَ شَرِيْكَ لَهٗ اِلٰهًا وَاحِدًا اَحَدًا صَمَدًا لَمْ يَتَّخِذْ صَاحِبَةً وَ لاَ وَلَدًا.
ASH-HADO AN LAA ELAAHA ILLAL LAAHO WAHDAHU LAA SHAREEKA LAHU ELAAHAN WAAHEDAN AHADAN SAMADAN LAM YATTAKHIZ SAAHEBATAN WA LAA WALADAN.
I bear witness that there is no deity but Allah He is alone and without any partner. He is (the only) Deity Single, Peerless and Independent. He neither took a wife nor begot any child.