Islam and other religions
Non-monotheistic religions
The Islamic view of non-monotheist religions differs among scholars and varies according to time and place. For example, the relationship of Islam with Hinduism and non-monotheist religions varied greatly according to the religious outlook of individual rulers. In India, the Mughal emperor Akbar, for example, was very tolerant towards Hindus, while his successor Aurangzeb was less so. This variability persists today; while fundamentalists are often less tolerant, liberal movements within Islam often try to be more open-minded.
Islam's view of Jews and Christians
The Qur'an uses the term People of the Book to include all monotheists, including Jews, Christians and Muslims. According to Islam, all nations were given a Messenger and guidance from Allah.
Muslims believe that Judaism and Christianity started out with the same message as Islam, but that eventually, due to their abandonment of adherence to strict monotheism, the followers of Moses earned God's anger (by worshipping the Golden Calf, mentioned in the Biblical account of Moses, and later Ezra) and the followers of Jesus went astray (by worshipping him). "And when Allah saith : O Jesus , son of mary! Didst thou say unto mankind : Take me and my mother for two gods beside Allah? he saith : Be glorified It was not mine to utter that to which I had no right . If I used to say it , then Thou knewest it . Thou knowest what is in my mind , and I know not what is in Thy mind . Lo! Thou , only Thou art the Knower of Things Hidden." [Surah 5:116]
It is popularly held by the vast majority of Muslims that the Holy Tawrat (revelation given to Moses) and the Holy Injil (revelation given to Jesus Christ) have been corrupted over time and that the present day Bible and Torah share little or no resemblance to the original message. According to Islam, Muhammad was sent during a time of spiritual darkness and once the Qur'an was finally established, all past revelations were abrogated, making the Last Testament not only for the Arab nation but for all mankind until the Day of Judgement.
Some parts of the Qur'an attribute differences between Muslims and non-Muslims to tahref-ma'any, a "corruption of the meaning" of the words. In this view, the Jewish Bible and Christian New Testament are true, but the Jews and Christians misunderstood the meaning of their own Scripture, and thus need the Qur'an to clearly understand the will of God. However, other parts of the Qur'an make clear that many Jews and Christians used deliberately altered versions of their scripture, and had altered the word of God. This belief was developed further in medieval Islamic polemics, and is a mainstream part of both Sunni and Shi'ite Islam today. This is known as the doctrine of tahref-lafzy, "the corruption of the text". Either way the Quran clearly states that the necessary information which was written in the previous scriptures can also be found in the Quran: "And We have sent down to you (O Muhammad) the Book (this Qur’aan) in truth, confirming the Scripture that came before it and Mohaymin (trustworthy in highness and a witness) over it (old Scriptures). So judge among them by what Allah has revealed" [Surah 5:48]
Historically, Islamic scholars have agreed that the Qur'an gives "People of the Book" special status, allowing those who live in Muslim lands (called dhimmi—protected people) to practice their own religions and to own property. People of the Book were not subject to certain Islamic rules, such as the prohibitions on alcohol and pork. Under the Islamic state, they were exempt from the draft, but were required to pay a tax known as jizyah, part of which went to charity and part to finance churches and synagogues. (They were, however, exempt from the zakat required of Muslims.) This agreement has in the past led to Islamic countries practicing religious toleration for Christians and Jews, although they were never accorded the full status enjoyed by Muslims.
Exclusivistic thought in Islam
One part—often seen as the largest or at least currently the most vocal—focuses on the differences takes an exclusivistic and aggressive approach to the differences between Islam and the Judeo-Christian community. Like in other faiths, this can lead to parts of the Muslim community holding beliefs like the necessity of bringing them back to the "Straight Path" by persuasion, or even force, and then acting them out.
Inclusivistic thought in Islam
Another part—often with a lower-profile, if not currently an outright minority—of Muslims focus on the similiarities and believe that people of faith in Islam, Christianity, and Judaism all serve the same God, and cite verses such as the following:
"We believe in Allah, and in what has been revealed to us and what was revealed to Abraham, Isma'il, Isaac, Jacob, and the Tribes, and in (the Books) given to Moses, Jesus, and the prophets, from their Lord: We make no distinction between one and another among them, and to Allah do we bow our will (in Islam)." (Surat Al Imran; 3:84).
" Those with Faith, those who are Jews, and the Christians and Sabaeans, all who have Faith in Allah and the Last Day and act rightly, will have their reward with their Lord. They will feel no fear and will know no sorrow." (Surat al-Baqara; 2:62).
" The Messenger believes in what has been revealed to him from his Lord, as do the men of faith. Each one (of them) believes in Allah, His angels, His Books, and His Messengers. "We make no distinction (they say) between one and another of His Messengers." And they say: "We hear, and we obey, (we seek) Thy forgiveness, our Lord, and to Thee is the end of all journeys." (Surat al-Baqara; 2:285).
" Call to the way of your Lord with wisdom and fair admonition, and argue with them in the kindest way. Your Lord knows best who is misguided from His way. And He knows best who are guided." (Surat an-Nahl; 16:125).
" ...You will find the people most affectionate to those who have faith are those who say, 'We are Christians.' That is because some of them are priests and monks and because they are not arrogant." (Surat al-Ma'ida; 5:82).
" Only argue with the People of the Book in the kindest way - except in the case of those of them who do wrong - saying, 'We have iman in what has been sent down to us and what was sent down to you. Our God and your God are one and we submit to Him." (Surat al-`Ankabut; 29:46).
One verse of the Qur'an says "God forbids you not, with regards to those who fight you not for [your] faith nor drive you out of your homes, from dealing kindly and justly with them; for God loveth those who are just." (Qur'an, 60:8), which is interpreted as a clear admonition not to be disrespectful or unkind to non-Muslims. According to a hadith, Muhammad said to his people "The one who murders a dhimmi [non-Muslim under protection of the state] will not smell the fragrance of Paradise, even if its smell was forty years travelling distance" [Sahih Ahmed].
The growth of Islam Religion today
Based on the percentages published in the 2003 CIA factbook, Islam is the second largest religion in the world. According to the World Network of Religious Futurists (http://www.wnrf.org/news/trends.html), the U.S. Center for World Mission (http://www.religioustolerance.org/growth_isl_chr.htm), and the controversial Samuel Huntington, Islam is growing faster numerically than any other religion. It is a matter of great controversy whether this is due in large part to the higher birth rates in many Islamic countries, or whether a high conversion rate may also be a factor.
The Muslim population today comprises over 1.3 billion people; estimates of Islam by country based on US State Departement figures yield a total of 1.48 billion, 22.82% of the world's population. However, only 18% of Muslims live in the Arab world; a fifth is found in Sub-Saharan Africa, about 30% in the Indian subcontinental region of Pakistan, India and Bangladesh, and the world's largest single Muslim community (within the bounds of one nation) is in Indonesia. There are also significant Muslim populations in China, Europe (especially in the Mediterranean countries), Central Asia, and Russia. There are approximately 5 million Muslims in North America. The world population is growing at about 1.10% per year, but the percentage of Muslim population is increasing by 1.4% per year, mostly due to higher birth rate of African and Asian countries. Birth rates in many Muslim countries have begun to decline, although more slowly than in other nations, which also may be a factor.
Denominations of Islam
There are a number of Islamic religious denominations, each of which has significant theological and legal differences from each other. The major branches are Sunni and Shi'a, with Sufism often considered as an extension of either Sunni or Shi'a thought. All denominations, however, follow the five pillars of Islam and believe in the six pillars of faith (mentioned earlier).
The Sunni sect of Islam comprises the majority of all Muslims (about 90%). It is broken into four similar schools of thought (madhhabs) which interpret specific pieces of Islamic practice. They are named after their founders Maliki, Shafi'i, Hanafi, and Hanbali. Each school of thought differs slightly on fiqh (thoughts on how to practise Islam) although all accept the fundamentals contained within the Holy Quran.
Shi'a Islam comprises most of the Muslims that are not counted among the Sunni. The Shi'a consist of one major school of thought known as the Jafaryia or the "Twelvers", and a few minor schools of thought, as the "Seveners" or the "Fivers" referring to the number of infallible leaders they recognise after the death of Muhammad. The term Shi'a is usually taken to be synonymous with the Jafaryia/Twelvers.
While some consider the Islamic mysticism called Sufism to constitute a separate branch, most Sufis can easily be considered Sunni or Shi'a. Sufism is the hardest to understand by non-practitioners because on first sight it seems that sufis are either of Shi'a or Sunni denomination, but it is true that some sects of Sufism can be categorised as both Sunni and Shi'a whilst others are not from either denomination. The distinction here is because the schools of thought (madhhabs) are regarding "legal" aspects of Islam, the "dos" and "don'ts", whereas Sufism deals more with perfecting the aspect of sincerity of faith, and fighting one's own ego. Other people may call themselves Sufis who may be perceived as having left Islam (or never followed Islam). There are also some very large groups or sects of Sufism that are not easily categorised as either Sunni or Shi'a, such as the Bektashi or those that can be categorised as both at the same time, like the Barelwi. Sufism is found more or less across the Islamic world, though bearing distinctive regional variations, from Senegal to Indonesia.
According to Shaikh Mahmood Shaltoot, Head of the al-Azhar University in the middle part of the 20th Century, the Ja'fari school of thought, which is also known as "al-Shi'a al- Imamiyyah al-Ithna Ashariyyah" (i.e., The Twelver Imami Shi'ites) is a school of thought that is religiously correct to follow in worship as are other Sunni schools of thought. This position was not generally accepted by mainstream Sunni scholarship, and al-Azhar itself distanced itself from this position.