Sayyiduna Yazid bin Asam رضي الله عنه says that Umm al-Mu'mineen Maymunah bint al-Harith رضي الله عنها herself narrated to me that the Messenger of Allah صلى الله عليه وسلم married her while he was in a state of being halal (not in ihram), and Maymunah رضي الله عنها was the maternal aunt of both myself and Ibn Abbas رضي الله عنهما.