Al Wala' wa'l Bara'
(Love and Hate for Allah's Sake)by Muhammad Sa'eed Al Qahtani
This book has been chosen by IslamicWeb.com as the best book that has been written about this important part of the Islamic Aqeedah. It has been taught by many Islamic universities such as The American Open University.
Chapter 6: What Negates the Declaration of Faith
Refuting the Murji'ah's and the Khawarij's Proofs
Chapter 7: Disbelief in Action and Conviction
Disbelief in Rulers
Disbelief by Conviction
Shirk, Hypocrisy and Apostacy
Chapter 8: What Negates Islam
A Summary of What the 'Ulamaa Say
Ruling by Other than What Allah has Revealed
Helping the Disbelievers Against the Muslims