Shia Islam is the second-largest branch of Islam. It holds that the Islamic prophet Muhammad designated Ali ibn Abi Talib as his successor (khalīfa) and the Imam after him, most notably at the event of Ghadir Khumm, but was prevented from succeeding Muhammad as the leader of the Muslims as a result of the choice made by some of Muhammad's other companions (ṣaḥāba) at Saqifah. This view primarily contrasts with that of Sunnī Islam, whose adherents believe that Muhammad did not appoint a successor before his death and consider Abū Bakr, who was appointed caliph by a group of senior Muslims at Saqifah, to be the first rightful (rāshidūn) caliph after Muhammad. Adherents of Shia Islam are called Shia Muslims.
Ja'far ibn Muhammad al-Sadiq was a Shia Muslim scholar, jurist, and theologian, and the sixth imam of the Twelver and Isma'ili branches of Shia Islam. Known by the title al-Sadiq, Ja'far was the founder of the Ja'fari school of Islamic jurisprudence. The hadith recorded from al-Sadiq and his predecessor, Muhammad al-Baqir, are said to be more numerous than all the hadith preserved from the Islamic prophet Muhammad and the other Shia imams combined. Among other theological contributions, he elaborated the doctrine of nass and isma, as well as that of taqiya.
In Shia Islam, the Imamah is a doctrine which asserts that certain individuals from the lineage of the Islamic prophet Muhammad are to be accepted as leaders and guides of the ummah after the death of Muhammad. Imamah further says that Imams possess divine knowledge and authority (Ismah) as well as being part of the Ahl al-Bayt, the family of Muhammad. These Imams have the role of providing commentary and interpretation of the Quran as well as guidance.
Muhammad ibn Hasan al-Mahdi is believed by the Twelver Shia to be the last of the Twelve Imams and the eschatological Mahdi, who will emerge in the end of time to establish peace and justice and redeem Islam.
In Islam, prophecy is the principle that God has appointed exemplary individuals, i.e. prophets and messengers to communicate His guidance to humanity. This is one of the five principles of the Twelver Principles of Religion.
Imāmah means "leadership" and is a concept in Twelver theology. The Twelve Imams are the spiritual and political successors to Muhammad, the Prophet of Islam, in the Twelver branch of Shia Islam. According to Twelver theology, the successors to Muhammad are infallible human beings, who rule justly over the community and maintain and interpret sharia and undertake the esoteric interpretation of the Quran. The words and deeds of Muhammad and the Imams guide the community. For this, the Imams must be free from error and sin and chosen by divine decree—nass—through the Prophet.
The hadith of the thaqalayn refers to a statement, attributed to the Islamic prophet Muhammad, that introduces the Quran, the principal religious text in Islam, and his progeny as the only two sources of divine guidance after his death. Widely reported by both Shia and Sunni authorities, the hadith of the thaqalayn is of particular significance in Twelver Shia, where their Twelve Imams are viewed as the spiritual and political successors of Muhammad.
Aqidah is an Islamic term of Arabic origin that literally means "creed". It is also called Islamic creed or Islamic theology.
Welayah or Walaya is a general concept of the Islamic faith and a key word in Shia Islam that refers, among other things, to the nature and function of the Imamate.
The Twelve Imams are the spiritual and political successors to the Islamic prophet Muhammad in the Twelver branch of Shia Islam, including that of the Alawite and Alevi.
Tawassul is an Arabic word originated from 'wasilat'. The wasilah is a means by which a person, goal or objective is approached, attained or achieved. In another version of the meaning of tawassul in another text: Tawassul is an Arabic word that comes from a verbal noun, wasilah, which according to Ibn Manzur in Lisān al-'Arab means "a station of King, a rank, or act of devotion". In other words, it refers to a position of power due to one's proximity to the king or sovereign. While the tawassul or tawassulan is the use of wasilah for this purpose. In religious contexts, the tawassul is the use of a wasilah to arrive at or obtain favour of Allah.
Adam, in Islamic theology, is believed to have been the first human being on Earth and the first prophet of Islam. Adam's role as the father of the human race is looked upon by Muslims with reverence. Muslims also refer to his wife, Ḥawwāʾ, as the "mother of mankind". Muslims see Adam as the first Muslim, as the Quran states that all the Prophets preached the same faith of Islam.
‘Iṣmah or ‘Isma is the concept of incorruptible innocence, immunity from sin, or moral infallibility in Islamic theology, and which is especially prominent in Shia Islam. In Shia theology, ismah is characteristic of prophets, imams, and angels. When attributed to human beings, ismah means "the ability of avoiding acts of disobedience, in spite of having the power to commit them". Along with a pure constitution, excellent qualities, firmness against opponents, and tranquility (as-Sakinah), ismah is a divine grace bestowed by God.
Qadar is the concept of divine destiny in Islam. As God is all-knowing and all-powerful, everything that has happened and will happen in the universe is already known. At the same time, human beings are responsible for their actions, and will be rewarded or punished accordingly on Judgement Day.
'Aql is an Arabic term used in Islamic philosophy and theology for the intellect or the rational faculty of the soul that connects humans to God. According to Islamic beliefs, 'aql is what guides humans towards the right path and prevents them from deviating. In jurisprudence, it is associated with using reason as a source for sharia and has been translated as 'dialectical reasoning'.
Twelver Shīʿism, also known as Imāmiyya, is the largest branch of Shīʿa Islam, comprising about 85 percent of all Shīʿa Muslims. The term Twelver refers to its adherents' belief in twelve divinely ordained leaders, known as the Twelve Imams, and their belief that the last Imam, Imam al-Mahdi, lives in Occultation and will reappear as the promised Mahdi.
The Imamate in Nizari Isma'ili doctrine is a concept in Nizari Isma'ilism which defines the political, religious and spiritual dimensions of authority concerning Islamic leadership over the nation of believers. The primary function of the Imamate is to establish an institution between an Imam who is present and living in the world and his following whereby each are granted rights and responsibilities.
The doctrine of the Imamate in Isma'ilism differs from that of the Twelvers because the Isma'ilis had living Imams for centuries after the last Twelver Imam went into concealment. They followed Isma'il ibn Ja'far, elder brother of Musa al-Kadhim, as the rightful Imam after his father, Ja'far al-Sadiq. The Ismailis believe that whether Imam Ismail did or did not die before Imam Ja'far, he had passed on the mantle of the imamate to his son Muhammad ibn Isma'il as the next imam.
The verse of obedience is verse 4:59 of the central religious text in Islam, the Quran. It reads
O you who believe! Obey God and obey the Messenger and those in authority among you. And if you differ among yourselves concerning any matter, refer it to God and the Messenger, if you believe in God and the Last Day. That is better, and fairer in outcome.
Baháʼís venerate Muhammad as one of a number of prophets or "Manifestations of God", but consider his teachings to have been superseded by those of Baháʼu'lláh, the founder of the Baháʼí Faith.
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