(37) باب الرُّخْصَةِ فِي نِكَاحِ الْمُحْرِمِ .
It was narrated from Abu Ash-Sha'tha' that Ibn 'Abbas told him:
"The Prophet married Maimunah when he was a Muhrim."
Reference: Sunan an-Nasa'i 3272
In-book reference: Book 26, Hadith 77
English translation: Vol. 4, Book 26, Hadith 3274