Ten Matters Which Invalidate a Person’s Islam

Islam is built upon sincere faith in Allah, worshipping Him alone, and following the guidance of Prophet Muhammad ﷺ. Just as a Muslim should learn what strengthens faith, it is also important to understand beliefs and actions that seriously contradict the foundations of Islam.

Muslim scholars have discussed matters known as the Nullifiers of Islam (Nawaqid al-Islam). A well-known summary lists ten major matters. Learning about them should encourage Muslims to protect their faith, increase their knowledge, and turn to Allah in sincere repentance whenever they make mistakes.

1. Associating Partners With Allah (Shirk)

The first and most serious matter is Shirk, which means directing an act of worship that belongs to Allah alone toward someone or something else.

Allah says:

“Indeed, Allah does not forgive associating others with Him, but forgives anything else of whoever He wills.”
Qur’an 4:48

A Muslim should therefore worship Allah alone, make sincere dua to Him, depend upon Him, and avoid every form of worship that contradicts Tawheed.

2. Taking Intermediaries in Worship

A Muslim believes that Allah hears our prayers and that we can call upon Him directly.

Making beings into objects of worship or calling upon them for matters that belong exclusively to Allah contradicts the principle of Tawheed.

Allah says:

“And your Lord has proclaimed, ‘Call upon Me, I will respond to you.’”
Qur’an 40:60

This teaches Muslims to build a direct and sincere relationship with Allah through dua, worship, repentance, and trust.

3. Rejecting Clear Foundations of Islamic Belief

Islam has fundamental beliefs that distinguish Islamic faith from other religions and belief systems.

A Muslim should accept the clear teachings revealed by Allah and avoid deliberately rejecting established foundations of the religion.

At the same time, declaring a particular person to be outside Islam is an extremely serious matter. Such judgments should not be made casually or without proper Islamic knowledge.

4. Believing Another Guidance Is Better Than the Prophet’s Guidance

Muslims believe that Prophet Muhammad ﷺ is the final Messenger of Allah and that his guidance provides the example Muslims are commanded to follow.

Allah says:

“Indeed, in the Messenger of Allah you have an excellent example…”
Qur’an 33:21

Muslims should study the Sunnah and try to follow the Prophet ﷺ with knowledge, wisdom, sincerity, and good character.

5. Hating What the Messenger ﷺ Brought

Faith includes loving Allah, His Messenger ﷺ, and the guidance revealed through him.

A person may sometimes find an obligation difficult to perform because of weakness, habit, or personal struggle. This should not automatically be confused with rejecting or hating Allah’s guidance itself.

The correct response to personal weakness is to seek knowledge, ask Allah for help, and continue striving to improve.

6. Mocking Islam or Its Teachings

Making deliberate mockery of Allah, His revelations, His Messenger ﷺ, or the religion is treated very seriously in Islamic teachings.

Allah says:

“Was it Allah, His revelations, and His Messenger that you ridiculed?”
Qur’an 9:65

Muslims should speak about religion respectfully and should also be careful about jokes, social-media posts, memes, and comments involving sacred matters.

7. Practising Magic (Sihr)

Islam strongly warns against Sihr (magic or witchcraft), particularly practices involving shirk, devils, or other prohibited acts.

The Qur’an discusses magic in Surah Al-Baqarah:

“But neither of these two taught anyone without saying, ‘We are only a test, so do not disbelieve.’”
Qur’an 2:102

Scholars have discussed different forms of magic and their rulings in detail. Muslims should stay away from magic, fortune-telling, occult practices, and anything that conflicts with Tawheed.

8. Helping Others in Hostility Against Muslims

Islam teaches loyalty to faith while also commanding justice, honesty, and good treatment of people.

Deliberately supporting persecution or unjust aggression against Muslims is a serious matter. However, Islamic rulings concerning alliances, conflict, treaties, citizenship, and relations with non-Muslims contain important details and should not be reduced to simplistic judgments.

Allah also commands:

“Do not let the hatred of a people lead you to injustice. Be just! That is closer to righteousness.”
Qur’an 5:8

9. Believing Someone Is Exempt From the Message of Prophet Muhammad ﷺ

Muslims believe that Muhammad ﷺ is Allah’s final Prophet and Messenger.

Allah says:

“Muhammad is not the father of any of your men, but is the Messenger of Allah and the seal of the prophets.”
Qur’an 33:40

Therefore, accepting the finality and message of Prophet Muhammad ﷺ is an essential part of Islamic belief.

10. Completely Turning Away From the Religion

The final matter concerns deliberately turning away from the religion of Allah—refusing to learn it or follow it altogether.

Islam encourages Muslims to continuously seek beneficial knowledge.

The Prophet ﷺ taught Muslims the importance of learning, understanding their religion, and putting beneficial knowledge into practice.

Even small steps can strengthen faith: reading the Qur’an regularly, learning Salah correctly, studying authentic Islamic teachings, making dua, and spending time with knowledgeable and righteous people.

Why Muslims Should Learn About These Matters

The purpose of learning about the nullifiers of Islam should not be to search for faults in other Muslims or hastily label people as disbelievers.

Rather, Muslims should learn these matters to protect their own Tawheed and faith.

Questions of disbelief, apostasy, intention, ignorance, misunderstanding, coercion, and whether a ruling applies to a particular individual can involve important scholarly conditions and details. Therefore, individual cases should be referred to trustworthy and qualified Islamic scholars.

How Can We Protect Our Faith?

A Muslim can strengthen and protect his or her faith by:

• Worshipping Allah alone.

• Learning the Qur’an and authentic Sunnah.

• Performing the five daily prayers.

• Making sincere dua and repentance.

• Staying away from Shirk and superstition.

• Learning Islamic beliefs from qualified teachers.

• Asking knowledgeable scholars when religious matters are unclear.

• Keeping good Muslim company and continuously seeking beneficial knowledge.