It was narrated that Abu 'Ubaidah said:

"Aishah said: 'The Messenger of Allah married me when I was nine and I lived with him for nine years.'"

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا عَبْثَرٌ، عَنْ مُطَرِّفٍ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي عُبَيْدَةَ، قَالَ قَالَتْ عَائِشَةُ تَزَوَّجَنِي رَسُولُ اللَّهِ ﷺ لِتِسْعِ سِنِينَ وَصَحِبْتُهُ تِسْعًا .