(29) باب إِنْكَاحِ الرَّجُلِ ابْنَتَهُ الصَّغِيرَةَ .
It was narrated from 'Aishah that the Messenger of Allah married her when she was nine and he died when she was eighteen years old.
Reference: Sunan an-Nasa'i 3258
In-book reference: Book 26, Hadith 63
English translation: Vol. 4, Book 26, Hadith 3260