Nawāqidul Islām (The Nullifiers of Islam) by Imam Muhammad Ibn Abdulwahhāb
Taught by Abū Anas Mālik Al-Jardalī
These lessons cover the ten most common nullifiers of Islam. They invalidate the religion, good deeds and belief of its practitioner, just as the nullifiers of purity invalidate ones ablution. If a person commits any one of these nullifiers, his good deeds will become void and he will be from amongst the polytheist. And if he were to die upon this state, he would be from the people of the hell-fire.