السلام عليكم و رحمة الله و بركاته
1. Kufrul-'Inaad: Disbelief out of stubborness. This applies to someone who knows the truth and admits to knowing the truth and admits to knowing it with his tongue, but refuses to accept it and refrains from making a declaration. Allaah subhanahu wa ta'ala says: Throw into Hell every stubborn disbeliever
[Soorah Qaaf (50), Ayah 24]
2. Kufrul-Inkaar: Disbelief out of denial. This applies to someone who denies with both heart and tongue. Allaah subhanahu wa ta'ala says: They recognize the favors of Allaah, yet they deny them. Most of them are disbelievers.
[Soorah Nahl (16), Ayah 83]
3. Kufrul-Kibr: Disbelief out of arrogance and pride. The disbelief by the devils (Iblees) is an example of this type of Kufr.
4. Kufrul-Juhood: Disbelief out of rejection.This applies to someone who aknowledges the truth in his heart, but rejects it with his tongue. This types of kufr is applicable to those who calls themselves Muslims but who reject any necessary and accepted norms of Islam such as Salaat and Zakat. Allaah subhanahu wa ta'ala says: They denied them (OUR SIGNS) even though their hearts believed in them , out of spite and arrogance.
[Soorah Naml (27), Ayah 14]
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