Safiyya at night, he said, ‘Take it easy, both of you. She is Safiyya (1) [daughter of Huyayy] (2).’ He then said, ‘I feared that Satan might cast something into your hearts, for Satan circulates through the son of Adam as blood does.’” (3)
What al-Siddīq meant by this was: “I am not protected from error as the Messenger—may Allah bless him and grant him peace—was.” This is true.
As for the objection, “How can the leadership of someone who relies upon his subjects to set him straight be valid?” it is the statement of one who is ignorant of the true nature of leadership. The ruler is not the lord of his subjects (4), such that he has no need of them; nor is he Allah’s Messenger to them, such that he is the intermediary between them and Allah. Rather, he and his subjects are partners who cooperate in furthering the welfare of religion and worldly life. He therefore needs their assistance, just as they need his.
He is like the leader of a caravan who guides them along the road: if he leads them along the road, they follow him; if he strays from the road (5), they alert and guide him; and if an assailant comes out against them and attacks them, he and they cooperate in repelling him. Yet if he is the most accomplished among them in knowledge, ability, and mercy, that is more conducive to their well-being.