It was narrated from 'Aishah that the Messenger of Allah married her when she was six years old, and consummated the marriage with her when she was nine.
Hadith ReferenceSunan an-Nasa'i / The Book of Marriage / Hadith: 3257
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه