أَخْبَرَنِي عِمْرَانُ بْنُ بَكَّارٍ، قَالَ حَدَّثَنَا أَبُو الْمُغِيرَةِ، قَالَ حَدَّثَنَا الأَوْزَاعِيُّ، قَالَ حَدَّثَنِي عَبْدَةُ، قَالَ حَدَّثَنِي ابْنُ يِسَافٍ، قَالَ سُئِلَتْ عَائِشَةُ مَا كَانَ أَكْثَرَ مَا كَانَ يَدْعُو بِهِ النَّبِيُّ صلى الله عليه وسلم قَالَتْ كَانَ أَكْثَرَ دُعَائِهِ أَنْ يَقُولَ " اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ شَرِّ مَا عَمِلْتُ وَمِنْ شَرِّ مَا لَمْ أَعْمَلْ بَعْدُ " .
Ibn Yasaf said: "I asked 'Aishah, what was the supplication that the Prophet [SAW] said the most? She said: 'The supplication that he said the most was: 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 yet.)'" Translation Not Available
Book Ref: Sunan An Nisai Book 50 Hadith 5524
Web Ref: Sunan An Nisai Vol 6 Book 50 Hadith 5526