All praise be to Allah.

My dear brothers and sisters beware of the following sins, they are so dangerous that they can nullify your Deen.

1. Shirk: Associating partners with Allah.

Allaah says:

“Verily, Allaah does not forgive that partners be associated with Him in worship (Shirk), but He forgives what is less than that to whom He wills.” [Surah An-Nisaa: 116]

And He says:

“Verily, the one who mixes partners in worship with Allaah (Shirk), then Paradise has been made forbidden for him and his final abode will be the Hellfire. And the wrongdoers will not have any helpers (in Hell).”

[Surah Al-Maa’idah: 72]

What falls into this is supplicating and invoking the deceased, seeking assistance from them, as well as making oaths to them and offering sacrificial animals to them. Doing anything of such kind immediately makes you a non-believer.

2. Putting Intermediaries between you and Allah.

Whoever places intermediaries between himself and Allaah, asking them to intercede on his behalf, and relying on them, has committed disbelief according to the unanimous agreement of the scholars. It means you believe that Allah will only here to select few and their intercession will work for you. You have no trust in Allah and his grace that he may accept your supplications, as a result, you believe others more than you believe Allah.

3. Thinking All religions are true.

Whoever does not hold the polytheists to be disbelievers, or has doubts about their disbelief or considers their ways and beliefs to be correct, has committed disbelief. When you have accepted Islam, no question remains to believe that all religions are true. It will mean you hold their beliefs and gods to be true and thus end up indulging in Shrik. This certainly doesn’t mean you should not respect non-believers, but it means not to believe in what they believe in.

4. Trusting in other sources of Guidance other than that of Prophet Muhammad’s (PBUH).

Whoever believes that some guidance other than that of the Prophet’s (Sallallahu ‘alayhi Wa Sallam) is more complete than his guidance and that someone else’s judgement is better than his judgement, such as those who prefer the judgement of the Tawaagheet (pl. of Taaghoot; false deities/religions) over his judgement, then he is a disbeliever.

5. Hating anything that Prophet Muhammad came with.

Whoever hates something that the Messenger came with, even though he may act on it, has disbelieved, based on Allaah’s saying:

“That is because they disliked what Allaah sent down, so He nullified their (good) deeds.” [Surah Muhammad: 9]

6. Whoever mocks Islam.

Whoever mocks or ridicules any part of the Messenger’s Religion or its rewards or punishments has committed an act of disbelief. The proof for this is Allaah’s statement:

“Say: ‘Was it Allaah and His verses and His Messenger that you were mocking? Make no excuses, you have disbelieved after having had faith.” [Surah At-Tawbah: 65-66]

7. Black Magic/Shir

Sorcery, which includes magic spells that cause a person to hate (sarf) [2] or love (‘atf) [3] someone/something. So whoever performs it or is pleased with it being done, has committed disbelief. The proof for this is Allaah’s statement:

“And neither of these two (angels) would teach anyone until they had first said to them: ‘We are only a trial (for the people), so do not commit disbelief.’” [Surah Al-Baqarah: 102]

8. Supporting and assisting the polytheists against the Muslims.

The proof for this is Allaah’s statement:

“And whoever amongst you takes them (i.e. the disbelievers) as allies and protectors then he is indeed from among them. Verily, Allaah does not guide a wrong-doing [4] people.” [Surah Al-Maa’idah: 51]

9. Accepting things according to one's likeness.

Whoever believes that it is permitted for some people to be free of (implementing) the Sharee’ah (revealed laws) of Muhammad (i.e. Islaam), then he is a disbeliever, according to Allaah’s statement:

“And whoever seeks a Religion other than Islaam, it will never be accepted from him and in the Hereafter, he will be from among the losers.” [Surah Aali ‘Imraan: 85]

10. Turning away from knowledge.

Turning away from Allaah’s Religion, not learning it or implementing it (is an act of disbelief). The proof for this is Allaah’s saying:

“And who does more wrong [5] than he who is reminded [6] of the ayat (signs/verses) of his Lord, then turns away [7] from them. Verily, We shall extract retribution [8] from the criminals.” [Surah As-Sajdah: 22]

There is no difference, with regard to (committing any of) these nullifiers, between the one who jokes, the one who is serious or the one who does so out of fear. However, the one who commits them due to being coerced (is excused). All of these (ten) matters are from the gravest in danger and from those that most often occur. So the Muslim must beware of them and fear from these acts befalling him.