While the founder of all Islam is clearly Muhammad, the founder of Shia Islam is unquestionably his nephew and son-in-law,
Shiism developed out of a dispute between the Prophet Muhammad's followers over who would succeed him as the leader of the Muslim community. After the Prophet's death in 632 C.E., some believed that the new leader should come from the Prophet's family.
The first part was the emergence of the Shia, which starts after Muhammad's death in 632 and lasts until Battle of Karbala in 680. This part coincides with the Imamah of Ali, Hasan ibn Ali and Hussain.
ʿAlī ibn Abī Ṭālib (Arabic: عَلِيّ بْن أَبِي طَالِب; c. 600 – 661 CE) was the last Caliph of the Rashidun Caliphate, the successor state to the Islamic prophet Muhammad's political dominions. He is considered by Shia Muslims to be the first Imam, the rightful religious and political successor to Muhammad.
Sunnis dominated the first nine centuries of Islamic rule (excluding the Shia Fatimid dynasty) until the Safavid dynasty was established in Persia in 1501. The Safavids made Shia Islam the state religion, and over the following two centuries they fought with the Ottomans, the seat of the Sunni caliphate.
Like most Sunni, Shia Islam hold that all Muslims will eventually go to Jannah, and like the Ash'ari school, believe heedless and stubborn unbelievers will go to hell, while those ignorant of the truth of Islam but "truthful to their own religion", will not.
Sunni and Shi'ite Muslims share the same faith and abide by the same five pillars of Islam (Professor 7 Oct. 2003). There are no rules forcing a woman to adopt her husband's particular branch of Islam (ibid.).
The divide originated with a dispute over who should succeed the Prophet Muhammad as leader of the Islamic faith he introduced. Today, about 85 percent of the approximately 1.6 billion Muslims around the world are Sunni, while 15 percent are Shia, according to an estimate by the Council on Foreign Relations.
Individual clerics are referred to as mullā or ākhūnd, but since those terms have developed "a somewhat pejorative connotation" since at least the 1980s, the term rūḥānī has been "promoted" as an alternative, "especially by the clerical class itself".
Sunni Muslims only combine the five daily prayers if they have a good reason to, for example if they are travelling. Shi'a Muslims have more freedom to combine certain prayers, such as the midday and afternoon prayers. Therefore they may only pray three times a day.
Changes in the religious make-up of nowadays both nations changed drastically from that time and on. In 1500 the Safavid Shah Ismail I undertook the conquering of Iran and Azerbaijan and commenced a policy of forced conversion of Sunni Muslims to Shia Islam. Many Sunnis were murdered.
Sunni and Shia Muslims share many central beliefs, including a belief in the Oneness of Allah (tawhid), and that Prophet Muhammad (peace be upon him and his family) was the final Messenger of Allah, who received Divine revelations recorded in the Holy Qur'an.
Subsequently, those Muslims who put their faith in Abu Bakr came to be called Sunni (“those who follow the Sunna,” the sayings, deeds and traditions of the Prophet Muhammad) and those who trusted in Ali came to be known as Shia (a contraction of “Shiat Ali,” meaning “partisans of Ali”).
Most Muslims in Turkey are Sunni Muslims forming about 90%, and Shia-Aleviler (Alevis, Ja'faris and Alawites) denominations in total form up to 10% of the Muslim population. Precise numbers are unavailable since Turkey doesn't conduct censuses about religious denominations.
For Shiites, historically, their clergy discouraged Shiites from attending Friday prayers. According to them, communal Friday prayers with a sermon were wrong and had lapsed (along with several other religious practices) until the return of their 12th Imam, Muhammad al-Mahdi.
Most experts and media sources estimate approximately 90 percent of the population is Sunni Muslim and 10 percent is Christian. Scholars and NGOs estimate Shia Muslims comprise approximately 1 percent of the population. There are also small numbers of Dawoodi Bohra Muslims and Ahmadi Muslims.
Today, Shia Muslims make up the majority of the Iraqi population. Iraq is the location of the holy cities of Najaf and Karbala, pilgrimage sites for millions of Shia Muslims. Najaf is the site of Ali's tomb, and Karbala is the site of the tomb of Muhammad's grandson, third Shia imam Husayn ibn Ali.
Islam in Malaysia is represented by the Shafi'i version of Sunni theology and the practice of any other form of the religion (such as Shia Islam) is heavily restricted by the government.
In societies that practice polygamy, the specific type is polygyny, which is having more than one wife (polyandrous unions, of having more than one husband, are much less common). Muslim societies allow for up to four wives, but not without specific rules and regulations.
Shia Islam
Shia Ayatollahs Ali al-Sistani and Ali Khamenei believe there are no authoritative Islamic prohibitions on tattoos. The Quran does not mention tattoos or tattooing at all. Grand Ayatollah Sadiq Hussaini Shirazi ruled: "Tattoos are considered makruh (reprehensible but not forbidden).
In Shia Islam, it is permissible under specific circumstances — they argue that the ban came from the second Caliph Umar. If a man is separated from his wife, he may enter into a temporary marriage-contract with another woman with a specified mahr mutually agreed upon.
Shī'ah Muslims consider the accusation that they are using a different Qur'an as one of the misconceptions about the Shi'a. The Shī'ah recite the Qur'an according to the Qira't of Hafs on authority of 'Asim, which is the prevalent Qira't in the Islamic world.
The greatest of the sins described as al-Kaba'ir is the association of others with Allah or Shirk.
While the Quran speaks of the seven gates of hell, "relatively early" hadith attest that hell has seven levels. This interpretation became "widespread" in Islam.