It is narrated from Sayyida Aisha (may Allah be pleased with her) that when morning would come, the Noble Prophet (peace and blessings be upon him) would be in a state of major ritual impurity (janabah), then he (peace and blessings be upon him) would perform ghusl (ritual bath) and observe the fast.
Hadith Referenceالفتح الربانی / كتاب الصيام / 3800
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«اخرجه البخاري: 1926، 1930، ومسلم: 1109، (انظر مسند أحمد ترقيم الرسالة: 24104 ترقیم بيت الأفكار الدولية: 24605»