“There is no compulsion in religion. Verily, the right path has become distinct from the wrong path. Whoever disbelieves in Taaghut (false deities)1 and believes in Allaah, then he has grasped the most trustworthy handhold that will never break.”(Qur’an 2: 256)
“And whatsoever the Messenger gives you, take it. And whatsoever he forbids you, abstain (from it) and fear Allaah. Verily, Allaah is severe in punishment.” (Qur’an 59: 7)
ONE: Shirk in the worship of Allah: to associate something and/or anyone in the worship of Allaah:
“Verily Allaah forgives not setting up rivals in worship with Him, but He forgives whom He pleases other sins than that.” (Qur’an 4: 116)
“Verily, whosoever sets up rivals in worship with Allaah, then Allaah has forbidden Al-Jannah for him, and the Fire will be his abode.” (Qur’an 5: 72)
TWO: Setting up intermediaries between a person and Allaah is Kufr (disbelief): calling upon them and seeking their intercession and depending upon them. Those who do this are taking “associates” with Allaah and this is Shirk. Allaah (subhanahu wa ta’ala) says (what means):
“Then set not up rivals unto Allaah (in worship) while you know (that He Alone has the right to be worshiped). (Qur’an 2: 22)
THREE: Believing that the Mushrikeen (those who commit Shirk) are not Kufar or doubting their Kufr or defending and correcting the beliefs of the Kufar, is Kufr. Allaah (subhanahu wa ta’ala) says (what means):
“And if any amongst you who take them (wholeheartedly) as friends, then surely he is one of them.”(Qur’an 5: 51)
FOUR: The belief that guidance by someone other than the Prophet Muhammad (sallallaahu ‘alayhe wa sallam) is better or that ruling by other than the rule of Muhammad (sallallaahu ‘alayhe wa sallam) is better, then this is Kufr. The rule of Muhammad (sallallaahu ‘alayhe wa sallam) is the rule of Allaah:
“But no, by your Lord, they can have no true Faith (al-waajib: which is dutiful upon them), until they make you judge in all disputes between them, and find in their souls no resistance against your decisions, but accept (them) fully with submission.”(Qur’an 4: 65)
FIVE: Hating any command or anything of the Prophet’s (sallallaahu ‘alayhe wa sallam) Message despite practicing it is Kufr.
“That is because they hate that which Allaah has sent down, so He has made their deeds fruitless.” (Qur’an 47: 9)
SIX: Mocking any part of Islaam or any of Allaah’s Names and Attributes is Kufr.
“Was it at Allaah, and His signs, and His Messenger that you were mocking? Make no
excuse, you have disbelieved (became Kufar) after you had believed.”(Qur’an 9: 65-66)
SEVEN: Involvement in Magic:
“Solomon did not disbelieve but the devils disbelieved, teaching men magic and such things that came down at Babylon to the two angels (put coma after the word angels) Harut and Marut, but neither of these two (angels) taught anyone (such things) till they had said: We are only for trial, so disbelieve not (by learning the magic from us).”(Qur’an 2: 102)
EIGHT: Standing by the Mushrikeen, supporting them and helping them against the Muslims (so that they will be the prevalent ones) is Kufr.
“And he amongst you who take them as friends (WHOLEHEARTEDLY), then surely he is one of them.” (Qur’an 5: 51)
NINE: Believing that some “special” people don’t have to follow the Prophet (sallallaahu ‘alayhe wa sallam) is Kufr because this negates the second part of the declaration of Tawheed ‘Muhammad is the slave and Messenger of Allaah,”
“And whoever desires a religion other than Islaam, it will never be accepted from him, and in the Hereafter he will be one of the losers.” (Qur’an 3: 85)
TEN: Completely turning away from the religion of Allaah, not learning it and practicing it, is Kufr.
“And who does wrong than the one to whom are recited the Aayat (proofs, evidences, verses, revelations, etc.) of his Lord, then he turns aside therefrom? Verily, We shall exact retribution from the Mujrimin (criminals, disbelievers, polytheists, sinners etc.)” (Qur’an 32:)