حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا أَبُو دَاوُدَ، حَدَّثَنَا ابْنُ أَبِي الزِّنَادِ، عَنْ أَبِيهِ، عَنْ أَبَانَ بْنِ عُثْمَانَ، قَالَ سَمِعْتُ عُثْمَانَ بْنَ عَفَّانَ، يَقُولُ سَمِعْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَقُولُ ‏"‏ مَا مِنْ عَبْدٍ يَقُولُ فِي صَبَاحِ كُلِّ يَوْمٍ وَمَسَاءِ كَلِّ لَيْلَةٍ بِسْمِ اللَّهِ الَّذِي لاَ يَضُرُّ مَعَ اسْمِهِ شَىْءٌ فِي الأَرْضِ وَلاَ فِي السَّمَاءِ وَهُوَ السَّمِيعُ الْعَلِيمُ ثَلاَثَ مَرَّاتٍ - فَيَضُرَّهُ شَىْءٌ ‏"‏ ‏.‏ قَالَ وَكَانَ أَبَانُ قَدْ أَصَابَهُ طَرَفٌ مِنَ الْفَالِجِ فَجَعَلَ الرَّجُلُ يَنْظُرُ إِلَيْهِ فَقَالَ لَهُ أَبَانُ مَا تَنْظُرُ إِلَىَّ أَمَا إِنَّ الْحَدِيثَ كَمَا قَدْ حَدَّثْتُكَ وَلَكِنِّي لَمْ أَقُلْهُ يَوْمَئِذٍ لِيُمْضِيَ اللَّهُ عَلَىَّ قَدَرَهُ ‏.‏

'Uthman bin 'Affan said: "I heard the Messenger of Allah (saas) say: "There is no person who says, in the morning and evening of every day: Bismillahil-ladhi la yadurru ma'a ismihi shay'un fil-ardi wa la fis-sama'i wa Huwas-Sami'ul-'Alim (In the name of Allah with Whose Name nothing on earth or in heaven harms, and He is the All-Seeing, All-Knowing), three times, and is then harmed by anything.'" (Hasan)He (one of the narrators) said: "Aban had been stricken with paralysis on one side of his body, and a man started looking at him. Aban said: 'Why are you looking at me? The Hadith is as I have narrated it to you, but I did not say it that day, so that the decree of Allah might be implemented.'" Translation Not Available

Book reference: Sunan Ibn Majah Book 34 Hadith 3869
Web reference: Sunan Ibn Majah Volume 5 Book 34 Hadith 3869