Sunan an-Nasa'i 3256

Arabic

أَخْبَرَنَا مُحَمَّدُ بْنُ النَّضْرِ بْنِ مُسَاوِرٍ، قَالَ حَدَّثَنَا جَعْفَرُ بْنُ سُلَيْمَانَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ تَزَوَّجَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم لِسَبْعِ سِنِينَ وَدَخَلَ عَلَىَّ لِتِسْعِ سِنِينَ ‏.‏

Translation

It was narrated that 'Aishah said:"The Messenger of Allah married me when I was seven years old, and he consummated the marriage with me when I was nine

Authenticity

Sahih · Abu Ghuddah

Reference