Combining the verse {And if two groups} with the hadith "Fighting him is disbelief"

Question:
May Allah reward you, bless you, and make Islam and the Muslims benefit from you. We begin with this question, in which its owner (may Allah preserve you) and the Honorable Shaykh ask: How do we combine the verse, the saying of Allah the Exalted, "And if two groups," with the hadith "Fighting him is disbelief"?

Answer:
Yes. My dear. "And if two groups" and the hadith "Fighting him is disbelief." Insulting a Muslim is open sinfulness. Yes, we said it is minor shirk. It is kufr (disbelief), but it is minor shirk. A Muslim, however, may have minor shirk. A believer may have minor shirk. It does not contradict faith. Yes.