Context: Sunni Islam (or ) is the largest denomination of Islam. Its name comes from the word Sunnah, referring to the exemplary behavior of the Islamic prophet Muhammad. The differences between Sunni and Shia Muslims arose from a disagreement over the choice of Muhammad's successor and subsequently acquired broader political significance, as well as theological and juridical dimensions., An imam (', plural: ') is an Islamic leadership position. It is most commonly in the context of a worship leader of a mosque and Muslim community by Sunni Muslims. In this context, imams may lead Islamic worship services, serve as community leaders, and provide religious guidance. For Shi'a Muslims, the imam has a more central meaning and role in Islam through the concept of Imamah; the term is only applicable to those members of the house of the prophet ahl al-Bayt, designated as infallibles., Ab Bakr Abdallh bin Ab Qufah a-iddq (573 CE22 August 634 CE) popularly known as Abu Bakr, was a senior companion ("Sahabi") andthrough his daughter Aishathe father-in-law of the Islamic prophet Muhammad. Abu Bakr became the first openly declared Muslim outside Muhammad's family. Abu Bakr served as a trusted advisor to Muhammad. During Muhammad's lifetime, he was involved in several campaigns and treaties., A hadith (or  plural: ahadith, ) is one of various reports describing the words, actions, or habits of the Islamic prophet Muhammad. The term comes from Arabic meaning a "report", "account" or "narrative". Hadith are second only to the Quran in developing Islamic jurisprudence, and regarded as important tools for understanding the Quran and commentaries ("tafsir") written on it. Some important elements of traditional Islam, such as the five salat prayers, are mentioned in hadith., Usulis are the majority Twelver Shi'a Muslim group. They differ from their now much smaller rival Akhbari group in favoring the use of "ijtihad" (i.e., reasoning) in the creation of new rules of "fiqh"; in assessing hadith to exclude traditions they believe unreliable; and in considering it obligatory to obey a "mujtahid" when seeking to determine Islamically correct behavior., Shia ("Shah", from "Shatu Al", followers of Ali) is a branch of Islam which holds that the Islamic prophet Muhammad designated Ali ibn Abi Talib as his successor (Imam). Shia Islam primarily contrasts with Sunni Islam, whose adherents believe that Muhammad did not appoint a successor. Instead they consider Abu Bakr (who was appointed Caliph through a Shura, i.e. consensus) to be the correct Caliph., In Shia Islam , Marja ( Arabic :   ) ( Plural : marji ) , also known as a marja taqld or marja dn ( Arabic :   /    ) , literally means `` Source to Imitate / Follow '' or `` Religious Reference '' . , is the label provided to the highest level Shia authority , a Grand Ayatollah with the authority to make legal decisions within the confines of Islamic law for followers and less - credentialed clerics . After the Qur'an and the Prophets and Imams , marji are the highest authority on religious laws in Usuli Shia Islam ., Shura (Arabic:  "shr") is an Arabic word for "consultation". The Quran and the Prophet Muhammad encourage Muslims to decide their affairs in consultation with those who will be affected by that decision., The Akhbaris are Twelver Shia Muslims who reject the use of reasoning in deriving verdicts, and believe Quran and hadith (sayings of Prophet Muhammad and Twelve Shia Imams) as the only source of law., Islam (' ;) is a religion articulated by the Quran, a text considered by its adherents to be the verbatim word of God ('), and, for the vast majority of adherents, the teachings and normative example (called the "sunnah", composed of accounts called "hadith") of Muhammad (5708 June 632 CE). It is the world's second-largest religion and the fastest-growing major religion in the world, with over 1.7 billion followers or 23% of the global population, known as Muslims. Islam is an Abrahamic monotheistic religion that upholds that God is one and incomparable and that the purpose of existence is to worship God. Muslims consider Muhammad to be the last prophet of God., Muhammad (c. 570 CE  8 June 632 CE) is the central figure of Islam and widely regarded as its founder by non-Muslims. He is known as the "Holy Prophet" to Muslims, almost all of whom consider him to be the last prophet sent by God to mankind to restore Islam, believed by Muslims to be the unaltered original monotheistic faith of Adam, Abraham, Moses, Jesus, and other prophets. Muhammad united Arabia into a single Muslim polity and ensured that his teachings, practices, and the Quran, formed the basis of Islamic religious belief., Ijtihad ("", lit. effort, physical or mental, expended in a particular activity) 
is an Islamic legal term referring to independent reasoning 
or the thorough exertion of a jurist's mental faculty in finding a solution to a legal question. It is contrasted with "taqlid" (imitation, conformity to legal precedent). According to classical Sunni theory, "ijtihad" requires expertise in the Arabic language, theology, revealed texts, and principles of jurisprudence ("usul al-fiqh"), 
and is not employed where authentic and authoritative texts (Qur'an and ahadith) are considered unambiguous with regard to the question, or where there is an existing scholarly consensus ("ijma"). Ijtihad is considered to be a religious duty for those qualified to perform it. An Islamic scholar who is qualified to perform "ijtihad" is called a "mujtahid"., Twelver (Athn'ashariyyah or Ithn'ashariyyah ) Shia Islam or Imamiyyah is the largest branch of Shia Islam. Twelver belief is based on the Quran and the message of the Islamic Prophet Muhammad attested in hadith, and on hadith taught by their Imams. 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, Muhammad al-Mahdi, lives in occultation and will reappear as the promised Mahdi. According to Shia tradition, the Mahdi's tenure will coincide with the Second Coming of Jesus Christ ("Isa"), who is to assist the "Mahdi" against the "Masih ad-Dajjal" (literally, the "false Messiah" or Antichrist)., Ali ibn Abi Talib (; 13 Rajab, 21 BH  21 Ramadan, 40 AH; 15 September 601  29 January 661) was the cousin and son-in-law of the Islamic prophet Muhammad, ruling over the Islamic caliphate from 656 to 661., Fiqh is Islamic jurisprudence. While "Sharia" is believed by Muslims to represent divine law as revealed in the Quran and the "Sunnah" (the teachings and practices of the Islamic prophet Muhammad), "fiqh" is the human understanding of the "Sharia""sharia" expanded and developed by interpretation ("ijtihad") of the Quran and "Sunnah" by Islamic jurists ("Ulama") and implemented by the rulings ("Fatwa") of jurists on questions presented to them., A Muslim is someone who follows or practises Islam, a monotheistic Abrahamic religion. Muslims consider the Quran (Koran), their holy book, to be the verbatim word of God as revealed to the Islamic prophet and messenger Muhammad. They also follow the teachings and practices of Muhammad ("sunnah ") as recorded in traditional accounts ("hadith"). "Muslim" is an Arabic word meaning "one who submits (to God)"., Subject: marja', Relation: subclass_of, Options: (A) advisor (B) arabic (C) behavior (D) belief (E) bin (F) branch (G) c (H) faith (I) god (J) ijtihad (K) islam (L) jurisprudence (M) law (N) leader (O) majority (P) message (Q) monotheistic religion (R) mujtahid (S) muslim (T) narrative (U) plural (V) position (W) prophet (X) question (Y) reasoning (Z) religious ([) report (\) rival (]) second (^) shia islam (_) sunni islam (`) term (a) theology (b) theory (c) word (d) world
Output: mujtahid