Sayyiduna Anas (may Allah be pleased with him) narrated that the Sunnah is that when a man marries a virgin woman while already having a previously married wife, he should stay with her for seven days and then allocate turns. And when he marries a previously married woman while already having a virgin wife, he should stay with her for three days and then allocate turns.
Hadith Referenceاللؤلؤ والمرجان / كتاب الرضاع / 925
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 67 كتاب النكاح: 101 باب إذا تزوج الثيب على البكر»