It is narrated from Yazid bin Asam (may Allah have mercy on him) that the Messenger of Allah (ﷺ) married Maymunah (may Allah be pleased with her) while he was in a state of being lawful (not in Ihram).
Hadith Referenceمسند الإمام الشافعي / كتاب الحج / 874
Hadith Takhrijصحيح من غير هذا الطريق اخرجه مسلم، النكاح، باب تحريم نكاح المحرم وكراهة خطبته (1411)۔