صحیح ابن حبان
Ibn Hibban
كتاب الطهارة
Book of Purification
باب فضل الوضوء - ذكر البيان بأن قوله صلى الله عليه وسلم غفر له ما تقدم من ذنبه أراد به من الصلاة إلى الصلاة
Chapter on the Virtue of Ablution - Clarification that “his previous sins are forgiven” refers to the time between prayers
1 hadith
Hadith 1043
Jami' bin Shaddad narrates: He heard Humran telling Abu Burdah this statement. Sayyiduna Uthman Ghani (may Allah be pleased with him) reported this saying of the Prophet Muhammad (peace and blessings be upon him): "Whoever performs ablution completely in the manner Allah has commanded, then the five prayers become an expiation for the sins committed between them."