I heard ʿA'isha as saying and she was asked as to whom Messenger of Allah ﷺ would have nominated as his successor if he had to nominate one at all. She said: Abu Bakr. It was said to her: Then whom after Abu Bakr? She said: ʿUmar. It was said to her. Then whom after ʿUmar? She said: Abu ʿUbaida b. al-Jarrah, and then she kept quiet at this.
سَمِعْتُ عَائِشَةَ وَسُئِلَتْ مَنْ كَانَ رَسُولُ اللَّهِ ﷺ مُسْتَخْلِفًا لَوِ اسْتَخْلَفَهُ قَالَتْ أَبُو بَكْرٍ فَقِيلَ لَهَا ثُمَّ مَنْ بَعْدَ أَبِي بَكْرٍ قَالَتْ عُمَرُ ثُمَّ قِيلَ لَهَا مَنْ بَعْدَ عُمَرَ قَالَتْ أَبُو عُبَيْدَةَ بْنُ الْجَرَّاحِ ثُمَّ انْتَهَتْ إِلَى هَذَا