(24) باب الْوُضُوءِ ثَلاَثًا ثَلاَثًا
After performing the ablution 'Uthman said, "I am going to tell you a Hadithwhich I would not have told you, had I not been compelled by a certainHoly Verse (the sub narrator 'Urwa said:
This verse is: "Verily, thosewho conceal the clear signs and the guidance which we have sent down...)" (2:159). I heard the Prophet (ﷺ) saying, 'If a man performs ablution perfectly and then offers the compulsory congregational prayer, Allah will forgive his sins committed between that (prayer) and the (next) prayer till he offers it.
Reference: Sahih al-Bukhari 160
In-book reference: Book 4, Hadith 26
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 4, Hadith 161