Hazrat Abu Bakr (radhiyallahu ‘anhu) then called Hazrat ‘Umar (radhiyallahu ‘anhu) in private and gave him certain advices. Thereafter, when Hazrat ‘Umar (radhiyallahu ‘anhu) left the room, Hazrat Abu Bakr (radhiyallahu ‘anhu) raised his hands high and made the following du‘aa:
O Allah! I only intended the good and benefit of the ummah in appointing Hazrat ‘Umar (radhiyallahu ‘anhu). I fear that if I do not appoint the correct person, the people will fall into fitnah after my demise, and hence I have decided that which I felt was most appropriate, but You know best. After pondering deeply over the matter, I have appointed over them the one whom I felt was the best among them, the most capable of leading the people, and the most desirous for that which will ensure their guidance and goodness. I am now beset by Your command of death which has come to me, so You see to their affairs after me, as they are Your slaves and their forelocks are in Your control. I beseech You to decide that which is the best for them in appointing their Khalifah after me. Make Hazrat ‘Umar (radhiyallahu ‘anhu) be among the Khulafaa-e-Raashideen (rightly guided Khalifas) who will follow the blessed way and example of Rasulullah (sallallahu ‘alaihi wasallam), the Nabi of mercy, and the way of all the righteous servants whose positions come after the position of Rasulullah (sallallahu ‘alaihi wasallam) (from the Ambiyaa (‘alaihimus salaam)) after him, and make his subjects righteous and obedient to him.
(Hayaatus Sahaabah 2/ 31-33)