Islam is the world's second most prolific religion, second only to Christianity. Several sites built in the name of Islam are on the UNESCO World Heritage List. The annual Muslim pilgrimage to Mecca, the Hajj, is one of the largest human migrations. Islam is a traditional religion in most of North Africa, much of the Middle East and parts of Central Asia, South Asia and Southeast Asia. Since modern times, there have been Muslims in most of the world's countries.
As Muslim congregations have had a significant role in most communities where they are present, a traveller will learn much from visiting a local mosque, regardless of belief.
The largest branches of Islam are Sunni and Shi'a. There are some minor differences in traditions and customs between the followers of the two, though the Quran is the central religious text for both and they have much else in common.
The division arose after the death of the Prophet Muhammad in AD 632; would the Islamic movement be led by some of his leading disciples (Sunni) or by members of his family, in particular by his son-in-law Ali (Shi'a Ali, or Shi'a for short)? There was a series of wars between the two factions, and there are still tensions between which often lead to serious political conflicts.
One important battle was on the 10th of the Islamic month of Muharram at Karbala, now in Iraq in 61 AH (680 CE); Ali's son Hussein and a band of followers were wiped out. This is still commemorated by both groups; for the Shi'a it is one of the most important religious events of the year. The day is called Ashura (meaning ten); for more detail, see the Iran article.
Originally the Shi'a were primarily an Arab movement; places as far west as Morocco had Shi'a dynasties, and the Shi'a Fatamid Caliphate (909-1170 CE) ruled much of Arabia, the Levant and North Africa. However, Shi'a Islam became the state religion of Iran in the 16th century and today Iran is its main center; nearby countries such as Iraq, Azerbaijan and Bahrain also have a Shi'a majority. Around 90% of the world’s Muslims are Sunni and only around 10% of them are Shi'a, but the whole situation is complex; most predominantly Sunni regions have Shi'a minorities and vice versa. Indonesia has the largest number of Sunni Muslims, while Iran has the largest number of Shi'a Muslims in the world. Pakistan has both the second-largest Sunni and the second-largest Shi'a Muslim population in the world.
There are a large number of other religious groups in the Muslim world, all basically Islamic but differing considerably in theology and style.
The Sufis are Muslim mystics; there are both Sunni and Shi'a Sufis. Among the well-known ones:
- Omar Khayyam (1048-1131 CE) was important as a mathematician, astronomer and philosopher, but is best-known in the West for his poetry. He lived most of his life in Bukhara. There are multiple scholarly interpretations of his work, and not all experts consider him Sufi.
- There are hundreds of stories about Mullah Nasrudin (or Nasreddin), a Sufi saint who lived in the Konya region of Turkey in the 13th century
- Rumi was a Sufi saint of the 13th century CE, a scholar and judge now known mainly for his poetry. He grew up near Balkh but the family fled west due to the Mongol invasion and he spent much of his career in the Konya region. His son founded the Whirling Dervish order.
- Dervishes are Sunni mystics who practice asceticism and mediation. Some dervish groups also whirl.
The Sufis have been quite influential in the West, at least among the sort of "new age" groups who also study yoga and Zen; Nasrudin tales and Rumi quotes are very common in those circles.
Ismailis are a Shi'a branch sometimes called "seveners" as opposed to "twelvers" for the main (Jafari) Shi'a group; the Jafari list twelve Imams (spiritual leaders) but the Ismaili recognise only the first seven of those and have a different lineage after that. Today there are about 15 million Nizari Ismailis (who consider the Aga Khan the 49th Imam) mainly in the Indian Subcontinent, plus a few smaller Ismaili groups, such as the Druze in the Levant.
Perhaps the best-known Ismaili is Hasan-i Sabbah, who was educated in Samarkand with Omar Khayyam as a classmate and later led a Persian revolt against the Seljuk Turks. There are many rather colourful stories about him, and the English words "hashish" and "assassin" are both derived from his name. His fortress at Alamut, near Qazvin is now a tourist attraction.
Other groups include:
- Alawis are a mystically-inclined branch of Shi'a Islam, centered in Syria.
- Salafi or Wahabi Islam began as a reform movement in the Arab Peninsula in the 18th century, calling for a return to the fundamentals of Islam — the Koran and Hadith — and adamantly opposed to such things as reverence for saints and the creation of shrines. Today it is the state religion of Saudi Arabia and significant in several other Gulf states. Note that, while "Wahabi" is widely used by outside commentators, the adherents of the movement call themselves Salafi and often consider "Wahabi" offensive.
- Deobandi Islam is a fundamentalist movement that arose in India in the 19th century. It became quite influential on the Northwest Frontier and today is the main religious inspiration behind the Taliban.
Islam and politics
The Muslim world has complicated politics and some, though by no means all, of the complications derive from religious differences. Some of the more obvious cases, which travellers in the region might need to be aware of:
- Iraq is predominantly Shi'a but with a substantial Sunni minority; estimates vary but none are under 20%. Saddam Hussein and most of his key followers were Sunni and were accused of oppressing the Shi'a as well as various other groups. Today's government is predominantly Shi'a and has been accused of oppressing Sunnis. Various opposition groups, including ISIL (Islamic State in Iraq and the Levant) are Sunni.
- In Syria, the Alawi make up only 12% of the population but the ruling family and many senior officials are from that community; most of their opposition is from the Sunni majority.
There are a number of radical Islamic groups active in various parts of the world and their co-religionists in other places are often accused of funding or arming them, though in all cases there are local issues that would be a problem with or without outside interference and in many cases it is extremely hard to tell if the accusations are true. For example, unrest in Jammu and Kashmir or Mindanao is sometimes blamed on interference from the nearest Muslim country, Pakistan or Malaysia respectively. Iran is routinely accused of supporting radical Shi'a groups such as Hezbollah further west while Saudi Arabia in particular and more generally the Arabs of the Gulf States are often accused of supporting various radical Sunni groups.
- See also: Holy Land
When entering in a mosque, it is appropriate to dress conservatively and show respect; details vary by place. It is a very good idea to learn a bit about the local rules before visiting a mosque especially if you're a non-Muslim.
Arabic, specifically Classical Arabic, is the original language of Islam's main religious text, the Qur'an. Other languages spoken by large numbers of Muslims are Urdu, Bengali, Persian, other Indo-Iranian languages, Malay/Indonesian and Turkic languages such as Turkish.
A literal translation of the word "Islam" is "submission", referring to submission to the will of God. The Arabic expression insh'allah (God willing) is common throughout the Muslim world.
According to Islam, several foodstuffs are haram, forbidden, the most known being pork. The taboo is in most cases extended to other pig products, such as gelatin and pig leather. Food that is allowed is known as halal. Halal certification is becoming more and more common in Western countries.
The Quran condemns alcoholic beverages. In many Muslim-majority countries, they are strongly regulated, if not prohibited.