What was the supplication the Messenger of Allah ﷺ made most often before his death?She replied, "The supplication he made most often was, 'O Allah, I seek refuge in You from the evil of what I have done and from the evil of what I have not done.'"
أخبرنا يونس بن عبد الأعلى عن ابن وهب قال أخبرني موسى بن شيبة عن الأوزاعي عن عبدة بن أبي لبابة أن ابن يساف حدثه أنه سأل
ما كان أكثر ما يدعو به رسول الله ﷺ قبل موته قالت كان أكثر ما كان يدعو به اللهم إني أعوذ بك من شر ما عملت ومن شر ما لم أعمل
[This hadith is sahih] It is also found in Kubra, no. 7964.Ibn Yasaf is Hilal. Muslim narrated it, no. 66/2716, and others, from the hadith of Uzai, from Abdah, from Hilal bin Yasaf, from Farwah bin Nawfal, from Ayesha, with this wording, and this is the correct version. See hadith no. 5527.