Question Summary:
What does the early scholars say regarding a person who breaks his bayah with the Khalifa/Amirul Muminin? And regarding the hukm about Bughat

Question Detail:

 
in scha ALLAH you are fine. I would like to ask you,
what does the early scholars say regarding a person who breaks his bayah with the khalifa/amirul muminin and regarding the hukm about bughat who fight the khilafa or imara?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful 
As-salāmu ‘alaykumwa-rahmatullāhiwa-barakātuh.
In order for us to reply you, kindly explain what you mean by
 Khalifah /Ameerul Muminin? What is your understanding of a
Khalifah /Ameerul Muminin? Furthermore, who are you referring to?
Who are the Bughat you are referring to?
And Allah Ta’āla Knows Best
Zakir Husain
Student DarulIftaa
Michigan, U.S.A
Checked and Approved by,
Mufti Ebrahim Desai.