Sahih al-Bukhari, Hadith 5133 ⓘ

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).

حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، حَدَّثَنَا سُفْيَانُ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم تَزَوَّجَهَا وَهْىَ بِنْتُ سِتِّ سِنِينَ، وَأُدْخِلَتْ عَلَيْهِ وَهْىَ بِنْتُ تِسْعٍ، وَمَكَثَتْ عِنْدَهُ تِسْعًا‏.‏

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Key Source: Marriage to Aisha

Maybe one of the most controversial areas of Muhammed's life was his marriage to a child bride, Aisha. According to Muslim sources, Muhammad married her in his 50s, while she was 6 years old, and the marriage was consummated when she was 9 years old. This relationship in particular is seen...

Key Sources

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also referenced under: Book 67, Hadith 69 (In-Book) & Volume 7, Book 62, Hadith 64 (USC-MSA)