If I were to choose a bosom friend I would have definitely chosen Abu Bakr as my bosom friend, but he is my brother and my companion and Allah, the Exalted and Gliorious. has taken your brother and companion (meaning Prophet himself) as a friend.
The Book of the Merits of the Companions - Sahih Muslim 2383a
This narration from the Prophet Muhammad (peace be upon him) concerning Abu Bakr al-Siddiq carries profound spiritual and theological significance. The statement "If I were to choose a bosom friend I would have definitely chosen Abu Bakr" establishes Abu Bakr's unparalleled status among all companions, indicating his supreme qualification for the highest spiritual companionship.
The clarification "but he is my brother and my companion" demonstrates that the bond between Prophet and Abu Bakr transcends ordinary friendship, being rooted in brotherhood established in Medina and continuous companionship throughout the prophetic mission. This relationship encompasses both spiritual and worldly dimensions.
The concluding declaration "Allah has taken your brother and companion as a friend" refers to the divine honor bestowed upon the Prophet Muhammad himself, indicating his unique station of closeness to Allah. This serves to elevate the discussion beyond human relationships to the ultimate spiritual reality - that the highest friendship is with the Divine.
Scholars note this hadith establishes Abu Bakr's preeminence while simultaneously affirming the Prophet's special relationship with Allah. The careful wording prevents any misunderstanding that could equate human friendship with divine friendship, while still granting Abu Bakr the highest possible honor among created beings.