Fatimah was born in Mecca to Khadija, the first of Muhammad's wives. There are differences of opinion on the exact date of her birth, but the widely accepted view is that she was born five years before the first Quranic revelations, during the time of the rebuilding of the Kaaba in 605, although this does imply she was over 18 at the time of her marriage, which was unusual in Arabia. Twelver Shia sources, however, state that she was born either two or five years after the first Qur'anic revelations, but that timeline would imply her mother was over fifty at the time of her birth, according to Sunni sources.