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Abu Jafar Muhammad ibn Husayn Khazin (Persian: ابوجعفر خازن خراسانی; 900–971), also called Al-Khazin, was an Iranian [1] Muslim astronomer and mathematician from Khorasan. He worked on both astronomy and number theory .
Al-Kazim was leader of the Shia community during the schism between the Ismaili and other branches of Islam after the death of the previous Imam Jafar al-Sadiq. [49] He established a network of agents who collected the khums in the Shia community of the Middle East and the Greater Khorasan.
Abu Hanifa (699–767) wrote Al Fiqh Al Akbar and Kitab Al-Athar, jurisprudence followed by Sunni, Sunni Sufi, Barelvi, Deobandi, Zaidiyyah and originally by the Fatimid and taught: Zayd ibn Ali (695–740) Ja'far bin Muhammad Al-Baqir (702–765) Muhammad and Ali's great great grand son, jurisprudence followed by Shia, he taught
The balance al-Khazini built for Sanjar's treasury was modeled after the balance al-Asfizari, who was a generation older than al-Khazini, built. [7] Sanjar's treasurer out of fear destroyed al-Asfizari's balance; he was filled with grief when he heard the news. [7] Al-Khazini called his balance "combined balance" to show honor towards Al ...
Musa al-Kazim did not lend his support to the 786 revolt of the Alid pretender al-Husayn ibn Ali al-Abid, [33] and a letter attributed to al-Kazim even warns al-Husayn about his violent death. [33] The Shia imam was nevertheless accused of complicity by the Abbasid caliph al-Hadi, who was dissuaded from killing al-Kazim only by the intervention ...
He worked under two Abbasid caliphs, al-Ma'mun and al-Mu'tasim. [3] Habash al-Hasib developed a trigonometric algorithm to solve problems related to parallax, which was later rediscovered by Johannes Kepler in 1609 and it is now known as Kepler's equation. [8] [9] Habash is the father of the astronomer Abu Ja'far ibn Habash. [3]
Nizami accompanied the Ghurid ruler Ala al-Din Husayn (r. 1141–1161) in his war against Sanjar, and after the former's defeat at a battle near Herat in 1152/3, he hid himself in the city for a period. Nizami most likely composed the Chahar Maqala a few years later (in 1156), which he dedicated to the Ghurid prince Abu'l-Hasan Husam al-Din Ali ...
He spent most of his career in Herat, where his academic activities were supported by Ali-Shir Nava'i, a senior vizier in the Timurid court during Sultan Husayn Bayqara's rule, hence the reason for Kashifi to dedicate most of his works to Nava'i. He was also very close to the famous Persian poet and Sufi, Nur al-Din 'Abd al-Rahman Jami.