It was Abū Bakr al-Siddīq who dispatched Usāma’s army after the death of the Prophet—may Allah bless him and grant him peace. He said:
“I will not untie a banner that the Messenger of Allah—may Allah bless him and grant him peace—had tied.”
More than one person advised him to recall the army out of fear for its members, for they feared that, following the Prophet’s death—may Allah bless him and grant him peace—people would be emboldened against it. Abū Bakr refused to recall the army and ordered it to proceed. When people saw them waging war immediately after the Prophet’s death—may Allah bless him and grant him peace—this became one of the means by which Allah strengthened the religion, fortified the believers’ hearts, and humbled the disbelievers and hypocrites. This demonstrated the consummate understanding, faith, certainty, planning [and judgment] (1) of Abū Bakr al-Siddīq.
[The Rāfidī’s allegation against Abū Bakr—may Allah be pleased with him—that the Prophet—may Allah bless him and grant him peace—never appointed him to any office, and the response to it]
(Chapter) (2)
The Rāfidī (3) said:
“Moreover, the Prophet—may Allah bless him and grant him peace—never once appointed Abū Bakr to any office during his lifetime. Rather, he placed Amr ibn al-Ās in command over him on one occasion and Usāma on another. When he sent him (4) with Sūrat Barā’a, he recalled him after three days pursuant to revelation from Allah. How can a rational person accept (5) as imam someone whom the Prophet (6)—may Allah bless him and grant him peace—did not, by revelation from Allah, deem fit to deliver ten verses from Sūrat Barā’a?!”