أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، عَنْ حُصَيْنٍ، عَنْ هِلاَلِ بْنِ يِسَافٍ، عَنْ فَرْوَةَ بْنِ نَوْفَلٍ، قَالَ سَأَلْتُ عَائِشَةَ فَقُلْتُ حَدِّثِينِي بِشَىْءٍ، كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَدْعُو بِهِ قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ شَرِّ مَا عَمِلْتُ وَمِنْ شَرِّ مَا لَمْ أَعْمَلْ ‏"‏ ‏.‏

It was narrated that Farwah bin Nawfal said: "I asked 'Aishah: 'Tell me of something that the Messenger of Allah [SAW] used to say in his supplication.' She said: 'The Messenger of Allah [SAW] used to say: Allahumma, inni a'udhu bika min sharri ma 'amiltu wa min sharri ma lam a'mal ba'd (O Allah, I seek refuge with You from the evil of what I have done and from the evil of what I have not done.)'" Translation Not Available

Book Ref: Sunan An Nisai Book 50 Hadith 5527
Web Ref:  Sunan An Nisai Vol 6 Book 50 Hadith 5529