Mahdi in the context of "Kutub al-Sittah"

The Almohad Caliphate or Almohad Empire was a North African Berber Muslim empire founded in the 12th century. At its height, it controlled much of the Iberian Peninsula (Al-Andalus) and North Africa (the Maghreb).

The Almohad movement was founded by Ibn Tumart among the Berber Masmuda tribes, but the Almohad caliphate and its ruling dynasty, known as the Mu'minid dynasty, were founded after his death by Abd al-Mu'min. Around 1121, Ibn Tumart was recognized by his followers as the Mahdi, and shortly afterwards he established his base at Tinmel in the Atlas Mountains. Under Abd al-Mu'min (r. 1130–1163), they succeeded in overthrowing the ruling Almoravid dynasty governing the western Maghreb in 1147, when he conquered Marrakesh and declared himself caliph. They then extended their power over all of the Maghreb by 1159. Al-Andalus followed, and all of Muslim Iberia was under Almohad rule by 1172.

Twelver Shi'ism (Arabic: اِثْنَا عَشَرِيَّة, romanized: Ithnā ʿAshariyya) is the largest branch of Shia Islam, comprising about 85% of all Shia Muslims. The term Twelver refers to its adherents' belief in the twelve successors, referred to as Twelve Imams, and their belief that the last Imam, Muhammad al-Mahdi, lives in occultation (ghayba) and will reappear as "the awaited Mahdi" (al-Mahdi al-muntazar) alongside Isa al-Masih (Jesus Christ), son of Bibi Mariam (The Virgin Mary), in order to restore justice and peace.

Twelver Shi'as believe that the Twelve Imams are divinely appointed as both spiritual and political successors to the Islamic prophet Muhammad, and that they possess special knowledge and authority to guide the Muslim community. According to Twelver theology, the Twelve Imams are exemplary human individuals who rule over the Muslim community (Ummah) with justice, and are able to preserve and interpret the Islamic law (Sharia) and the esoteric meaning of the Qur'an. The words and deeds (sunnah) of Muhammad and the Imams are a guide and model for the Muslim community to follow. As a result, Muhammad and the Imams must be free from error and sin, a doctrine known as Ismah (literally 'protection') or infallibility, and must be chosen by divine decree, or nass, through Muhammad.

Al-Masih ad-Dajjal (Arabic: الْمَسِيحُ الدَّجَّالُ, romanized: Al-Masih ad-Dajjal, lit. 'the deceitful Messiah'), otherwise referred to simply as the Dajjal, is an antagonistic figure in Islamic apocalyptism who will pretend to be the promised Messiah and later claim to be God, appearing before the Day of Judgment according to the Islamic eschatological narrative.The Dajjal is not mentioned in the Quran, but he is mentioned and described in the Hadith. Corresponding to the Antichrist in Christianity, the Dajjal is said to emerge out in the East, although the specific location varies among the various sources.

The Dajjal will imitate the miracles performed by Jesus, such as healing the sick and raising the dead, the latter done with the aid of demons. He will deceive many people, such as weavers, magicians, and children of fornication.

Abū Muḥammad ʿAbd Allāh ibn al-Ḥusayn (Arabic: أبو محمد عبد الله بن الحسين; 31 July 874 – 4 March 934), better known by his regnal name al-Mahdī biʾllāh (Arabic: المهدي بالله, "The Rightly Guided by God"), was the founder of the Isma'ili Fatimid Caliphate, the only major Shi'a caliphate in Islamic history, and the eleventh Imam of the Isma'ili branch of Shi'ism.

He was born as Saʿīd ibn al-Ḥusayn (سعيد بن الحسين) in Askar Mukram to a family that led the secret Isma'ili missionary network (da'wa), propagating on behalf of the hidden imam, Muhammad ibn Isma'il, who would return as the prophesied Islamic messiah (mahdi). Orphaned at a young age, he moved to Salamiya, the family's base of operations, where he was adopted by his uncle. In the mid-890s Sa'id succeeded to the leadership of the expanding da'wa, which had expanded and gained adherents across the then Muslim world. However, his claims of not merely being a trustee of the hidden imam, but of him and his ancestors holding the imamate itself, led in 899 to a schism in the Isma'ili movement: those who did not recognise his claims split off to become the Qarmatians. The schism was followed by uprisings of pro-Isma'ili Bedouin in Syria in 902–903, launched without his consent by over-eager supporters, who aimed to force him to come forward as the mahdi. The Bedouin uprising was suppressed by the Abbasids, but drew the attention of the Abbasid Caliphate's authorities to him, forcing him to abandon Salamiya, and flee first to Ramla, then Fustat in Egypt, and finally Sijilmasa in what is now Morocco. There he remained, living as a merchant, until one of his missionaries, Abu Abdallah al-Shi'i, at the head of the Kutama Berbers overthrew the Aghlabid dynasty of Ifriqiya in 909.

Turco-Egyptian Sudan (Arabic: السودان التركي المصري), also known as Turkish Sudan or Turkiyya (Arabic: التركية, at-Turkiyyah), describes the rule of the Eyalet and later Khedivate of Egypt over what is now Sudan and South Sudan. It lasted from 1820, when Muhammad Ali Pasha started his conquest of Sudan, to the fall of Khartoum in 1885 to Muhammad Ahmad, the self-proclaimed Mahdi.

Messianism is the belief in the advent of a messiah who acts as the savior of a group of people. Some religions also have messianism-related concepts. Religions with a messiah concept include Hinduism (Kalki), Judaism (Mashiach), Christianity (Jesus), Islam (Mahdi and Jesus), Druze faith (Hamza ibn Ali), Zoroastrianism (Saoshyant), Buddhism (Maitreya), Taoism (Li Hong), and Bábism (He whom God shall make manifest).

In Judaism, the messiah will be a future Jewish king from the line of David and redeemer of the Jewish people and humanity. In Christianity, Jesus is the messiah, the savior, the redeemer, and God. In Islam, Jesus was a prophet and the messiah of the Jewish people who will return in the end times.

The Mahdist State, also known as Mahdist Sudan or the Sudanese Mahdiyya, was a state based on a religious and political movement launched in 1881 by Muhammad Ahmad (later Muhammad al-Mahdi) against the Khedivate of Egypt, which had ruled Sudan since 1821. After four years of struggle, the Mahdist rebels overthrew the Ottoman-Egyptian administration and established their own "Islamic and national" government with its capital in Omdurman. Thus, from 1885 the Mahdist government maintained sovereignty and control over the Sudanese territories until its existence was terminated by Anglo-Egyptian forces in 1898.

Muhammad Ahmad al-Mahdi enlisted the people of Sudan in what he declared a jihad against the administration that was based in Khartoum, which was dominated by Egyptians and Turks. The Khartoum government initially dismissed the Mahdi's revolution. He defeated two expeditions sent to capture him in the course of a year. The Mahdi's power increased, and his call spread throughout Sudan, with his movement becoming known as the Ansar. During the same period, the 'Urabi revolution broke out in Egypt, with the British occupying the country in 1882. Britain appointed Charles Gordon as General-Governor of Sudan. Months after his arrival in Khartoum and after several battles with the Mahdi rebels, Mahdist forces captured Khartoum, and Gordon was killed in his palace. The Mahdi did not live long after this victory, and his successor Abdallahi ibn Muhammad consolidated the new state, with administrative and judiciary systems based on their interpretation of Islamic law. The Coptic Christians, who composed a substantial portion of the country's population, were forced to convert to Islam.

Sadiq al-Mahdi (Arabic: الصادق المهدي, romanized: aṣ-Ṣādiq al-Mahdī; 25 December 1935 – 26 November 2020), also known as Sadiq as-Siddiq, was a Sudanese political and religious figure who was Prime Minister of Sudan from 1966 to 1967 and again from 1986 to 1989. He was head of the National Umma Party and Imam of the Ansar, a Sufi order that pledges allegiance to Muhammad Ahmad (1844–1885), who claimed to be the Mahdi, the messianic saviour of Islam.