Nizari Isma'ilism in the context of "Daylamites"

The Jaʿfarī school, also known as the Jafarite school, Jaʿfarī fiqh (Arabic: الفقه الجعفري) or Ja'fari jurisprudence, is a prominent school of jurisprudence (fiqh) within Twelver and Ismaili (including Nizari) Shia Islam, named after the sixth Imam, Ja'far al-Sadiq. In Iran, Jaʽfari jurisprudence is enshrined in the constitution, shaping various aspects of governance, legislation, and judiciary in the country. In Lebanon, this school of jurispudence is also accounted for in the legal system of the country and Shia Muslims can call upon it for their legal disputes.

It differs from the predominant madhhabs of Sunni jurisprudence in its reliance on ijtihad, as well as on matters of inheritance, religious taxes, commerce, personal status, and the allowing of temporary marriage or mutʿa. Since 1959, Jaʿfari jurisprudence has been afforded the status of "fifth school" along with the four Sunni schools by Azhar University. In addition, it is one of the eight recognized madhhabs listed in the Amman Message of 2004 by King Abdullah II of Jordan, and since endorsed by Sadiq al-Mahdi, former Prime Minister of Sudan.

The Nizari state (the Alamut state) was a Nizari Isma'ili Shia state founded by Hassan-i Sabbah after he took control of the Alamut Castle in 1090 AD, which marked the beginning of an era of Ismailism known as the "Alamut period". Their people were also known as the Assassins or Hashashins.

The state consisted of a nexus of strongholds throughout Persia and the Levant, with their territories being surrounded by huge swathes of hostile as well as crusader territory. It was formed as a result of a religious and political movement of the minority Nizari sect supported by the anti-Seljuk population. Being heavily outnumbered, the Nizaris resisted adversaries by employing strategic, self-sufficient fortresses and the use of unconventional tactics, notably assassination of important adversaries and psychological warfare. They also had a strong sense of community as well as total obedience to their leader.

Aga Khan (Persian: آقاخان; Arabic: آغا خان; also transliterated as Aqa Khan and Agha Khan) is the hereditary title of the spiritual leader and Imām of the Nizari Ismāʿīli Shias, a branch of Islam with approximately 12–15 million followers worldwide. The Aga Khan serves as both the religious head and temporal leader of the Ismaili community, providing spiritual guidance and overseeing extensive development and humanitarian work across Asia, Africa, and other regions where Ismailis live.

The title, which means "Great Leader" or "Grand Commander," has been passed down through a hereditary line for over 150 years, with each Aga Khan believed by his followers to be a direct descendant of the Islamic prophet Muhammad through his daughter Fatimah and son-in-law Ali. Unlike many other Islamic leadership positions, the Aga Khan's authority combines religious interpretation with significant involvement in education, healthcare, cultural preservation, and economic development.

In Nizari Isma'ili doctrine, imamate (Arabic: إمامة) is a concept 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 Nizari Imamate follows a genealogy of male Imams originating from the prophethood of Muhammad by means of wedlock of his daughter Fatimah with his cousin Ali and in succession, through their son Hussein and his onward descendants up to the present day. Each ordained as successor Imam of this lineage is charged with serving the Nizari Ismailis community of his era; who are liable to pay the zakat (tithe) dues to him due to his being as ex-officio and the designated Nizari Imam. The Imam in return, imparts them the religious and spiritual guidance and also strives for their physical well-being to the best of his ability.

Salamiyah (Arabic: سلمية, romanized: Salamiyya; also transliterated Salamiyya, Salamieh or Salamya) is a city in central Syria, administratively part of the Hama Governorate. It is located 33 kilometres (21 miles) southeast of Hama, 45 kilometres (28 miles) northeast of Homs. Its inhabitants are predominantly Ismaili.

The city is nicknamed the "mother of Cairo" because it was the birthplace of the second Fatimid caliph al-Qa'im bi-Amr Allah, whose dynasty would eventually establish the city of Cairo, and the early headquarters of his father Abdullah al-Mahdi Billah who founded the Fatimid Caliphate. The city is an important center of the Shi'ite Nizari Isma'ili and Taiyabi Isma'ili Islamic schools of Ismailism and also the birthplace of influential poet Muhammad al-Maghut. The population of the city is 66,724 (2004 census).

The Order of Assassins (Arabic: حَشّاشِین, romanized: Ḥaššāšīyīn; Persian: حشاشين, romanized: Ḥaššāšīn) was a Nizari Isma'ili religious order founded by Hasan-i Sabbah that existed between 1090 and 1275 AD and conducted high-profile assassinations in the Levant during the time of the crusader states.

During that time, the members lived in the mountain castles in Persia and the Levant, and held a strict subterfuge policy throughout the Middle East, posing a substantial strategic threat to Fatimid, Abbasid, and Seljuk authority, and killing several Christian leaders. Over the course of nearly 200 years, they killed hundreds who were considered leading enemies of the Nizari Isma'ili state. The modern term "assassination" is believed to have stemmed from the tactics used by the Assassins.

Alamut (Persian: الموت, meaning "eagle's nest") is a ruined mountain fortress located in the Alamut region in the South Caspian, near the village of Gazor Khan in Qazvin Province in Iran, approximately 200 km (130 mi) from present-day Tehran.

In 1090 AD, the Alamut Castle, a mountain fortress in present-day Iran, came into the possession of Hassan-i Sabbah, a champion of the Nizari Ismaili cause. Until 1256, Alamut functioned as the headquarters of the Nizari Ismaili state, which included a series of strategic strongholds scattered throughout Persia and Syria, with each stronghold being surrounded by swathes of hostile territory.