´Humran the freed slave of 'Uthman bin 'Affan said:` "I saw 'Uthman bin 'Affan sitting in Maqa'id. He called for water and he performed ablution, the he said: 'I saw the Messenger of Allah sitting in this place where I am sitting, performing ablution as I have done. Then he said: "Whoever performs ablution as I have done, his previous sins will be forgiven." And the Messenger of Allah said: "And do not be conceited (due to this great virtue)." (Sahih) Another chain with similar wording.
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 285
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح
Hadith Takhrij«سنن النسائی/الطہارة 68 ( 84 ) ، ( تحفة الأشراف : 9792 ، ومصباح الزجاجة : 118 ) ، وقد أخرجہ : صحیح البخاری/الوضوء 24 ( 159 ) ، 28 ( 164 ) ، الصوم 27 ( 1934 ) ، صحیح مسلم/الطہارة 3 ( 226 ) ، سنن ابی داود/الطہارة 50 ( 106 ) موطا امام مالک/الطہارة 6 ( 29 ) ، مسند احمد ( 1/66 ) ، سنن الدارمی/الطہارة 27 ( 720 ) ، ( اور ان میں «ولا تغتروا» کا لفظ نہیں ہے ) ( صحیح ) »
´It was narrated that Jami' bin Shaddad - AbuSakhrah - said:` "I heard Humran telling Abu Burdah in the mosque that he had heard 'Uthman bin 'Affan narrating that the Prophet had said" 'Whoever performs ablution perfectly as Allah has enjoined, then his prescribed prayer will serve as expiation for what is between them."
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 459
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم