It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: the Messenger of Allah (peace and blessings be upon him) married me at the age of nine, and I remained with him (peace and blessings be upon him) for nine years.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19359