Clarification that disbelief is of two types.

The Shaykh: Something else, but before we move on to the other matter, I want to say that disbelief is of two types: verbal disbelief and heart-based disbelief. Heart-based disbelief is what causes its owner to remain in the Fire eternally. Verbal disbelief is a sin; if a person knows it and persists in it, he is disobedient to Allah (Mighty and Majestic). And if he does not know it, then . There are many hadiths that train us in this precise Islamic training; and that is that we do not speak words that require figurative interpretation, but rather we are always straightforward, and likewise in writing, as we mentioned earlier.
Disbelief is of two types: verbal and heart-based. Heart-based disbelief causes its owner to remain in the Fire eternally. Verbal disbelief does not cause its owner to remain in the Fire eternally, but he is sinful if he knows, just as disbelief is divided into two types: practical disbelief and creedal disbelief. Creedal disbelief is like heart-based disbelief; they are twin brothers, and both lead their owner to the Fire with eternal abode.
Practical disbelief does not cause its owner to remain in the Fire eternally; rather, he performs the actions of disbelievers, so he imitates them. For example, a Muslim who does not pray, and there are hadiths that state: ; so is he one who remains in the Fire eternally? The detail is: if his leaving off prayer is due to a belief—meaning he denies its obligation—then his disbelief at that time is creedal disbelief, so he is the same as the disbelievers. And if his leaving off prayer is not due to a belief, but rather due to negligence in the action whose obligation he believes, then his disbelief is practical disbelief that does not cause its owner to remain in the Fire eternally.
So, verbal disbelief and heart-based disbelief correspond to another division: practical disbelief and creedal disbelief. Creedal disbelief and heart-based disbelief are both one, leading their owner to the Fire. Verbal disbelief and practical disbelief do not lead their owner to the Fire, but he disobeys Allah if he knows that what he is in of verbal disbelief and practical disbelief is contrary to the Shari'ah. If he contradicts the Shari'ah, he is punished; otherwise, he is not.
So here, this is called verbal disbelief in the expression of the scholars; because no one among the Muslims believes in these people of unity whom we mentioned, namely that Allah is Muhammad, and Muhammad is Allah. But this expression, from the Arabic perspective, suggests that Allah is Muhammad, and Muhammad is Allah.