(2) باب دُعَاءِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ
It was narrated from Abu Bakr Siddiq that :
he said to the Messenger of Allah (saas): "Teach me a supplication which I can say during my prayer." He said: "Say: Allahumma inni zalamtu nafsi zulman kathiran wa la yaghfirudh-dhunub illa Anta, faghfirli maghfiratan min 'indika warhamni, innaka Antal-Ghafurur-Rahim (O Allah, I have wronged myself greatly and no one forgives sins but You, so grant me forgiveness from You and have mercy on me, for You are the Oft-Forgiving, Most Merciful)."
Reference: Sunan Ibn Majah 3835
In-book reference: Book 34, Hadith 9
English translation: Vol. 5, Book 34, Hadith 3835