On the 9th or the 12th of Rabi-ul-Awwal 11 A.H., he left this mortal world…Hadrat ‘A’isha 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 Nasa’i vol.1 #18 p.108-109 (English material at the front) Note that she had nine years of married life with Mohammed, and since he died when she was eighteen, she was nine years old when she started her married life with Mohammed.
Tarehe 9 au 12 ya mwezi wa Rabi-ul-Awwal 11 BH, aliondoka kwenye ulimwengu huu wenye kudumu hadi kifo …Hadrat A’isha alikuwa na miaka kumi na nane wakati Nabii Mtakatifu Muhammad (amani na Baraka za Allah na ziwe juu yake) alipokufa na aliendelea kuwa mjane kwa miaka arobaini na nane hadi wakati alipokufa akiwa na miaka sitini na saba." Sunan Nasa’i juzuu ya 1 #18, uk.108-109 (Maelezo ya Kiingereza yanatangulia)