Narrated Ibn 'Abbas:

It was narrated that Ibn 'Abbas said: "When the Messenger of Allah died he had nine wives; he used to be intimate with all of them except one, who had given her day and night to 'Aishah."

أَخْبَرَنِي إِبْرَاهِيمُ بْنُ يَعْقُوبَ، قَالَ حَدَّثَنَا ابْنُ أَبِي مَرْيَمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، قَالَ حَدَّثَنِي عَمْرُو بْنُ دِينَارٍ، عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ تُوُفِّيَ رَسُولُ اللَّهِ ﷺ وَعِنْدَهُ تِسْعُ نِسْوَةٍ يُصِيبُهُنَّ إِلاَّ سَوْدَةَ فَإِنَّهَا وَهَبَتْ يَوْمَهَا وَلَيْلَتَهَا لِعَائِشَةَ .