It is narrated from Sayyidah Aishah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) married her when she was seven years old, the marriage was consummated when she was nine years old, and he (peace and blessings be upon him) passed away when she was eighteen years old.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19357