Sayyiduna Anas (may Allah be pleased with him) narrates from Sayyiduna Abu Talhah (may Allah be pleased with him): When the Prophet Muhammad (peace and blessings be upon him) achieved victory over a people, he (peace and blessings be upon him) liked to stay in their area for three days (the narrator is in doubt, perhaps these are the words) or three nights.
Hadith Referenceصحیح ابن حبان / كتاب السير / 4777
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح: ق - انظر ما قبله.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط البخاري