Chapter: About the Impurities that need to be Repented from:
Disbelief:
And as for kufr it is of two types:
Kufr akbar (major kufr) and kufr asghar (minor kufr).
So kufr akbar - this necessitates eternity in the Hellfire.
And the (kufr) asghar: Necessitates the fulfilment of the threat (of 
Hellfire) without eternally abiding in it. As occurs in the saying of the 
Exalted - and it used to be from what was recited and then it was abrogated 
:
"And do not detest/hate your fathers, for that is disbelief from 
you"
and his (sallallaahu alaihi wasallam) saying in the hadeeth:
"There are two matters in my ummah, by which (my) Ummah falls into kufr: 
Reviling the genealogy and wailing/lamenting (over the dead)"
And his saying in the Sunan:
"Whoever comes to a women from her anus has disbelieved in what was 
revealed upon Muhammad" and in another hadeeth: "Whoever comes to a 
sorcerer or a diviner and believes in what he says has disbelieved in what 
Allaah revealed upon Muhammad"
and his saying
"Do not become disbelievers after me, striking the necks of one 
another".
And this is the explanation of Ibn ‘Abbaas and the generality of the 
Companions regarding the speech of Allaah:
And whoever does not judge by what Allaah has revealed, then they are the 
disbelievers (5:44)
Ibn Abbaas said: "It is not the kufr that takes one out of the religion. 
Rather when he does it then it is [an act of] disbelief, and he is not like the 
one who disbelieves in Allaah and the Last Day" and Taawoos said the same 
and Ataa said: "It is disbelief less than disbelief, oppression less than 
oppression and rebellion less than rebellion"
And amongst them are those who interpreted the verse to mean the one who 
abandons the rule of Allaah while opposing and rejecting it (jahidan lahu) and 
this is the saying of Ikrimah! And this is a defective saying, since just the 
mere denial (juhud) of it is disbelief, regardless of whether he ruled by it or 
not.
And amongst them are those who explained it to mean abandoning ruling by all 
of what Allaah revealed, he said, and who enters into this the judgement of 
Tawhid and Islam! This is the interpretation of Abdul-Aziz al-Kinani, and this 
too is far from what is correct!! Since the threat (contained in the verse) is 
for the negation of ruling by the revealed legislation, and this can apply to 
abandoning all of the legislation of just some of it.
And amongst them are those who explained it to mean to rule in opposition to 
the text, deliberately, without being ignorant of it and nor due to error in 
understanding or interpreting it. Al-Baghawee quoted this from the scholars 
generally.
And amongst them are those explained to refer to the Ahl ul-Kitaab. And this 
is the saying of Qataadah, Dahhaak and others. And this is far (from what is 
correct) - and it is in opposition to the apparent wording - so it is not to be 
inclined towards.
And amongst them are those who explained it to mean the kufr that takes one 
out of the religion!
And what is correct is that judging by other than what Allaah has 
revealed is both types of kufr (disbelief) - kufr asghar (the minor disbelief) 
and kufr akbar (the major disbelief) - and [which of the two it is] depends on 
the condition of the ruler. If he believes in the obligation of judging by what 
Allaah has revealed n this situation but turned away from it - out of 
disobedience - and while acknowledging that he is deserving of punishment then 
this is kufr asghar. And if he (i’taqada) believes that it is not 
obligatory and that he has a choice in the matter - along with his firm 
belief that it is the judgement of Allaah - then this is kufr akbar - and if he 
was ignorant in the matter or made an error then he is one who errs 
(mukhtee’) and his ruling is as the same for those who err (i.e. one 
reward).
And the intent here is: That sins, all of them are of the minor form of kufr 
(kufr asghar). For they are the opposite of gratefulness - which is to act in 
obedience to Allaah. And the striving (of a person), either it constitutes 
gratefulness (shukr) or disbelief (kufr), or a third matter which is neither 
this or that (i.e gratefulness or disbelief), and Allaah knows best.
Chapter:
And as for the Major Kufr (kufr akbar) - then it is of five types :Kufr of 
takdheeb (rejection), kufr due to arrogance and pride whilst one acknowledges 
the truth (tasdeeq), kufr of I’raad (turning away), kufr of shakk (doubts) 
and kufr of nifaaq (hypocrisy).