Ibn Abu Mulayka reported,

I heard Ayesha being asked, "Whom would the Messenger of Allah ﷺ have appointed as his successor, had he appointed anyone?"She replied, "Abu Bakr."She was then asked, "And after Abu Bakr?"She said, "Umar."She was then asked, "And after Umar?"She said, "Abu Ubayda bin al-Jarrah," and she stopped at that.

Azami 10018

Hasan

عن ابن أبي مليكة

سمعت عائشة: وسئلت: من كان رسول الله ﷺ مستخلفا لو استخلفه؟ قالت: ابو بكر، فقيل لها ثم من بعد ابي بكر؟ قالت: عمر، ثم قيل لها: من بعد عمر؟ قالت: ابو عبيدة بن الجراح ثم انتهت الي هذا.

الأعظمي 10018حسن
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Virtues of the Companions and reports about them
Chapter
Virtue of groups of the Companions
Section
Virtue of Abu Bakr and Umar and Abu Ubayda bin Jarra
Numbering
Jami al-Kamil 10018 (2nd edition)