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Volume 9, Book 87, Number 139:
Narrated 'Aisha:
Allah's Apostle said (to me), "You were shown to me twice in (my) dream. Behold, a man was carrying you in a silken piece of cloth and said to me, "She is your wife, so uncover her,' and behold, it was you. I would then say (to myself),'If this is from Allah, then it must happen.' "
She was prepubescent:
"Narrated Aisha: The Prophet engaged me when I was a girl of six (years). We went to Medina and stayed at the home of Bani-al-Harith bin Khazraj. Then I got ill and my hair fell down. Later on my hair grew (again) and my mother, Um Ruman, came to me while I was playing in a swing with some of my girl friends. She called me, and I went to her, not knowing what she wanted to do to me. She caught me by the hand and made me stand at the door of the house. I was breathless then, and when my breathing became alright, she took some water and rubbed my face and head with it. Then she took me into the house. There in the house I saw some Ansari women who said, "Best wishes and Allah's Blessing and a good luck." Then she entrusted me to them and they prepared me (for the marriage). Unexpectedly Allah's Apostle came to me in the forenoon and my mother handed me over to him, and at that time I was a girl of nine years of age" (Bukhari Volume 5, Book 58, Number 234).
"A'isha ... reported: Allah's Apostle ... married me when I was six years old, and I was admitted to his house when I was nine years old" (Muslim Book 8, Number 3310).
"Narrated 'Aisha: that the Prophet married her when she was six years old and he consummated his marriage when she was nine years old, and then she remained with him for nine years (i.e., till his death)" (Bukhari Volume 7, Book 62, Number 64 and 65).
"Narrated 'Ursa: The Prophet wrote the (marriage contract) with 'Aisha while she was six years old and consummated his marriage with her while she was nine years old and she remained with him for nine years (i.e. till his death)" (Bukhari Volume 7, Book 62, Number 88).
"Narrated Hisham's father: Khadija died three years before the Prophet departed to Medina. He stayed there for two years or so and then he married 'Aisha when she was a girl of six years of age, and he consum[mat]ed that marriage when she was nine years old" (Bukhari Volume 5, Book 58, Number 236).
"Narrated Aisha, Ummul Mu'minin: The Apostle of Allah ... married me when I was seven or six. When we came to Medina, some women came. According to Bishr's version: Umm Ruman came to me when I was swinging. They took me, made me prepared and decorated me. I was then brought to the Apostle of Allah ... and he took up cohabitation with me when I was nine. She halted me at the door, and I burst into laughter" (Bukhari Book 41, Number 4915).
"Narrated 'Aisha: I used to play with the dolls in the presence of the Prophet, and my girl friends also used to play with me. When Allah's Apostle used to enter (my dwelling place) they used to hide themselves, but the Prophet would call them to join and play with me.(The playing with the dolls and similar images is forbidden, but it was allowed for 'Aisha at that time, as she was a little girl, not yet reached the age of puberty.)(Fateh-al-Bari page 143, Vol.13)" (Bukhari Volume 8, Book 73, Number 151).
And it's in Qur'an:
"And for such of your women as despair of menstruation, if ye doubt, their period (of waiting) shall be three months along with those who have it not. And for those with child, their period shall be till they bring forth their burden. And whosoever keepeth his duty to Allah, He maketh his course easy for him" (Qur'an 65:4).
