Reviewed August 2026

What do Muslims believe?

Muslims believe in one God. That's the center, and the rest hangs on it. In the common Sunni formulation (USC's religious-literacy primer labels it exactly that way), the beliefs are six: God, angels, revealed scriptures, prophets, a Day of Judgment, and divine decree. The practices are five, from daily prayer to the Ramadan fast. Shia tradition organizes the same faith in its own frameworks, so every list on this page is labeled by the tradition that teaches it.

The center, then the two lists

Each framework is credited to the tradition that uses it rather than presented as everyone's.

Start with the one sentence everything hangs on

Islam's core claim is belief in one God ('Allah' is simply Arabic for God, and Arab Christians use the same word) who communicates with humanity through prophets. Everything else on this page unfolds from that sentence. A Muslim is someone who accepts it along with Muhammad's role as God's messenger. That testimony of faith is the shahada, first of the five pillars in Yaqeen Institute's primer.

The six beliefs, the common Sunni framework

As taught in the common Sunni formulation (USC's religious-literacy primer labels it exactly that): belief in God; in angels; in revealed scriptures, the Qur'an among them; in the prophets, a chain running through Adam, Noah, Abraham, Moses, and Jesus to Muhammad; in a Day of Judgment; and in divine decree. If several of those names surprised you, that's the most useful discovery on this page: Islam locates itself inside the Abrahamic story, not apart from it.

The five practices

The famous 'five pillars,' per Yaqeen Institute's primer: the testimony of faith, prayer, zakat, fasting Ramadan, and hajj. In lived terms: saying the shahada; the five daily prayers; zakat, obligatory annual almsgiving (Qadir's zakat calculator, linked below, covers the working details); the dawn-to-sunset fast of Ramadan; and the once-in-a-lifetime pilgrimage to Mecca for those physically and financially able. Belief is the root; these are what it does all day.

Where the frameworks, and the practice, genuinely differ

The Shia framing is its own, not a variation footnote

Twelver Shia tradition organizes the faith as five 'roots of religion': monotheism, divine justice, prophethood, imamate (divinely guided leadership after the Prophet), and resurrection. Ten 'branches' of practice include the prayer, fasting, and pilgrimage you'd recognize, plus additional obligations like khums. Ismaili jurisprudence historically records seven pillars. Same God, same Prophet, same Qur'an; different scaffolding.

Scripture, and who gets to interpret it

The Qur'an is Islam's scripture, and the Sunnah is the Prophet's example, known through collected reports called hadith. But Islam is not a religion of self-executing quotations: as Egypt's Dar al-Ifta puts it, deriving law from those sources 'is a human activity undertaken by specialists,' with centuries of interpretive method behind every real ruling. That's why schools of law exist, and why 'the Qur'an says X' claims online usually need a scholar's context.

Belief is not a uniform; neither is practice

In Pew's 2017 U.S. survey, 65% of Muslim Americans said religion is very important in their lives while 42% reported praying all five daily prayers, and eight in ten said they fast in Ramadan. Meanwhile, in Pew's 2011-2012 international survey, at least one in five Muslims in 22 of the 38 countries asked identified as 'just Muslim,' declining sect labels entirely. So the Muslim you know may match everything above, some of it, or their own configuration. The respectful move is asking how they describe their own tradition, never assigning them one.

Belief questions, answered plainly

What do Muslims believe in simple terms?

One God, 'Allah' is Arabic for God, who sent prophets including Adam, Noah, Abraham, Moses, Jesus, and Muhammad, and revealed scriptures, the Qur'an among them; plus angels, a Day of Judgment, and divine decree, per the common Sunni formulation. Core practices are the testimony of faith, five daily prayers, annual almsgiving, fasting Ramadan, and pilgrimage to Mecca once if able.

What are the five pillars of Islam?

In the common Sunni framework: the shahada (testimony that there is no god but God and Muhammad is His messenger), salah (five daily prayers), zakat (obligatory annual almsgiving), sawm (the dawn-to-sunset fast of Ramadan), and hajj (pilgrimage to Mecca once in a lifetime for those able). Shia tradition organizes beliefs and practices in its own framework with substantial overlap.

Do Muslims believe in the Bible and the prophets?

Muslims believe God sent revelations before the Qur'an, including the Torah of Moses and the Gospel of Jesus, and honor the biblical prophets from Adam through Jesus as prophets of the same God. The Qur'an is Islam's own scripture, and Islamic law draws on it and the Prophet's example, interpreted by trained scholars.

What is the difference between the Qur'an and hadith?

The Qur'an is Islam's scripture. Hadith are separately collected reports of the Prophet's words and actions, which together convey the Sunnah, his example. Islamic law and practice draw on both, interpreted by trained scholars, Egypt's Dar al-Ifta describes that derivation as a specialist activity, not self-service quotation.

Do all Muslims practice the same way?

No, doctrine and observance are different measures. Pew's 2017 U.S. survey found 42% of Muslim Americans reporting all five daily prayers while eight in ten said they fast during Ramadan, and in Pew's 2011-2012 international survey many Muslims identified as 'just Muslim' without a sect label. Frameworks also differ between Sunni and Shia traditions. Ask individuals about their own practice rather than assuming it.

What makes someone a Muslim?

The shahada, the testimony of faith that there is no god but God and that Muhammad is His messenger, is the first of the five pillars in Yaqeen Institute's primer, and a Muslim is someone who holds that testimony. Levels of practice vary by person: Pew's 2017 U.S. survey found 42% reporting all five daily prayers, so ask individuals about their own practice rather than assuming it.

Zakat, the almsgiving pillar, has working details of its own; Qadir's zakat calculator handles them.

Sunni and Shia, explained →See it in person: visiting a mosqueFind your city in the mosque directory