Sayyiduna Anas (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings be upon him): “(After marriage) the one who was previously a virgin will have seven days, and the one who was previously a thayyib (i.e., widow or divorced) will have three days.”
Hadith Referenceصحیح ابن حبان / كتاب النكاح / 4208
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (7/ 88).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم