Moreover, one says, “He kept company with him for an hour,” and “He kept company with him for a year and a month.” Thus, companionship applies to both short and long periods. When used without qualification, it cannot be restricted without evidence; rather, it must be understood in the sense common to all its uses.
Undoubtedly, merely seeing another person does not warrant saying that one has kept company with him. This applies, however, when one sees him as a follower, taking him rather than anyone else as an example, and forming a particular attachment to him (1). Hence, no account is taken of the unbelievers and hypocrites who saw the Prophet—may Allah bless him and grant him peace—for they did not see him as someone who sought him out to believe in him and become one of his followers and supporters: those who believe what he reports (2), obey what he commands, remain loyal to him, oppose his enemies, and love him more than themselves, their wealth, and everything else.
[Abū Bakr] was distinguished (3) from the other (4) believers by having seen him with this disposition toward him. In this respect, he was his Companion.
A second proof is the authentic report in the two Sahīh collections, narrated by Abū Hurayrah from the Prophet—may Allah bless him and grant him peace—who said:
“I wish I could see my brothers.”
They asked, “O Messenger of Allah, are we not your brothers?”
He replied, “Rather, you are my Companions. My brothers are those who come after me, believe in me, and have not seen me.” (5)