Sahih Muslim Book 008, Number 3309:
'A'isha (Allah be pleased with her) reported: Allah's Messenger (may peace be upon him) married me when I was six years old, and I was admitted to his house at the age of nine. She further said: We went to Medina and I had an attack of fever for a month, and my hair had come down to the earlobes. Umm Ruman (my mother) came to me and I was at that time on a swing along with my playmates. She called me loudly and I went to her and I did not know what she had wanted of me. She took hold of my hand and took me to the door, and I was saying: Ha, ha (as if I was gasping), until the agitation of my heart was over. She took me to a house, where had gathered the women of the Ansar. They all blessed me and wished me good luck and said: May you have share in good. She (my mother) entrusted me to them. They washed my head and embellished me and nothing frightened me. Allah's Messenger (may peace be upon him) came there in the morning, and I was entrusted to him.
Sahih Muslim Book 008, Number 3310:
'A'isha (Allah be pleased with her) reported: Allah's Apostle (may peace be upon him) married me when I was six years old, and I was admitted to his house when I was nine years old.
Sahih Muslim Book 008, Number 3311
'A'isha (Allah be pleased with her) reported that Allah's Apostle (may peace be upon him) married her when she was seven years old, and he was taken to his house as a bride when she was nine, and her dolls were with her; and when he (the Holy Prophet) died she was eighteen years old.
Sahih Bukhari Volume 7, Book 62, Number 64
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).
Sahih Bukhari Volume 7, Book 62, Number 65
Narrated 'Aisha:
that the Prophet married her when she was six years old and he consummated his marriage when she was nine years old. Hisham said: I have been informed that 'Aisha remained with the Prophet for nine years (i.e. till his death)." what you know of the Quran (by heart)'
Sahih Bukhari Volume 7, Book 62, Number 88
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).
Sahih Bukhari Volume 5, Number 236.
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 consumed that marriage when she was nine years old.
Sahih Bukhari Volume 5, Number 234
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 all right, 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.
Abu Dawud, Vol. 2, Number 2116
Aisha said, "The Apostle of Allah married me when I was seven years old." (The narrator Sulaiman said: "Or six years."). "He had intercourse with me when I was 9 years old."
Sunan Abu-Dawud Book 41, Number 4915
Narrated Aisha, Ummul Mu'minin:
The Apostle of Allah (peace_be_upon_him) 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 (peace_be_upon_him), and he took up cohabitation with me when I was nine. She halted me at the door, and I burst into laughter.
Sunan Abu-Dawud Book 41, Number 4916
Narrated AbuUsamah: The tradition mentioned above (No. 4915) has also been transmitted by AbuUsamah in a similar manner through a different chain of narrators. This version has: "With good fortune." She (Umm Ruman) entrusted me to them. They washed my head and redressed me. No one came to me suddenly except the Apostle of Allah (peace_be_upon_him) in the forenoon. So they entrusted me to him.
Sunan Abu-Dawud Book 41, Number 4917
Narrated Aisha, Ummul Mu'minin: When we came to Medina, the women came to me when I was playing on the swing, and my hair was up to my ears. They brought me, prepared me, and decorated me. Then they brought me to the Apostle of Allah (peace_be_upon_him) and he took up cohabitation with me, when I was nine.
When Hadrat Aisha passed nine years of married life, the Holy Prophet Muhammad (peace and blessings of Allah be upon him) fell in mortal sickness. On the 9th or the 12th of Rabi-ul-Awwal 11 A.H., he left this mortal world
Hadrat Aisha was eighteen years of age at the time when the Holy Prophet Muhammad (peace and blessings of Allah be upon him) passed away and she remained a widow for forty-eight years till she died at the age of sixty-seven." Sunan Nasai 1 #18 p.108
Aisha was married when she was six years old, and nine when she went to Mohammeds house. Ibn-i-Majah 3:1876 p.133
Aisha was married at seven, went to Mohammeds house at nine, and was 18 when Mohammed died. According to al-Zawaid, its isnad is sahih according to the condition of Bukhari. However Abu Ubaida did not hear from his father, so it is munqata (has a gap) Ibn-i-Majah 3:1877 p.134
Aisha was 6 (or 7) years old when she was married, and the marriage was consummated when she was nine years old. al-Tabari vol.9 p.129-131. Muhammad b. Amr is one of the transmitters.
Aisha was 6-7 when married, and came the marriage was consummated when she was 9-10, three months after coming to Mecca al-Tabari vol.7 p.7. The chain of transmission includes an unnamed man from the Quraysh.