The Book makes clear what Allah has commanded and what He has forbidden, while the sword supports and reinforces it.
It is established by the Book and the Sunnah that Allah commanded that allegiance be pledged to Abū Bakr. Those who pledged allegiance to him were the men of the sword, who obeyed Allah in doing so. Thus, the Prophetic Caliphate was established in his person through the Book and iron.
As for Umar (1), Abū Bakr appointed him as his successor, and the Muslims pledged allegiance to him after Abū Bakr’s death. He therefore became imam when their pledge to him gave him effective power and authority (2).
As for his statement:
“Then Uthmān [ibn Affān] (3), through Umar’s designation of six men, of whom he was one, whereupon some of them selected him (4).”
[Uthmān’s pledge of allegiance was made by the consensus of the Muslims]
The response is likewise that Uthmān did not become imam merely because some of them selected him, but because the people pledged allegiance to him. All the Muslims pledged allegiance to Uthmān [ibn Affān] (5), and no one (6) withheld his pledge from him.
Imam Ahmad said in the narration of Hamdān ibn Ali (7): “There was no one among the group