عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ تَزَوَّجَنِي رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مُتَوَفَّى خَدِيجَةَ قَبْلَ مَخْرَجِهِ إِلَى الْمَدِينَةِ بِسَنَتَيْنِ أَوْ ثَلَاثٍ وَأَنَا بِنْتُ سَبْعِ سِنِينَ
It is narrated from Sayyida Aisha (may Allah be pleased with her), she says: The Messenger of Allah (peace and blessings be upon him) married me two or three years before migrating to Madinah Munawwarah, at that time I was seven years old. This was during the days of the death of Sayyida Khadijah (may Allah be pleased with her).