Sahih Muslim
The Book of Marriage (Kitab Al-Nikah)
Book Number: 008 / Hadith Number: 3285
Yazid b. al-Asamm reported: Maimuna daughter of al-Harith narrated to me that Allah's Messenger (may peace be upon him) married her and he was not in the state of Ihram. And she (Maimuna) was my mother's sister and that of Ibn 'Abbas (Allah be pleased with them).