Question: What was a branch of the Khalwatiyya order of Islamic mysticism founded by Sayyid Hasan Husameddin, with relations to the cousin and son-in-law of Muhammad?

full_context: Document 1: Muslim ibn Aqeel: Muslim ibn Aqil Al-Hashimi (Arabic: مسلم بن عقيل الهاشمي) was the son of Aqeel ibn Abu Talib and a member of the clan of Bani Hashim, thus, he is a cousin of Husayn ibn Ali. The people of Kufa called upon Husayn to overthrow the Umayyad dynasty who was on his way to Mecca for the Hajj pilgrimage. He wanted to confirm the loyalty of the people of Kufa, so he sent his cousin and his ambassador, Muslim ibn Aqeel, a famous warrior, to Kufa to observe the situation. He sent a letter to Husayn confirming their loyalty, before knowing that the 30,000 followers that he gained would all betray him. He was executed by the newly installed governor, Ubaydallah ibn Ziyad, on the 9th of Dhul Hijjah, 60 AH, and is buried at the back of Great Mosque of Kufa.
Document 2: Muhammad ibn Ali ibn Abdallah: Muhammad ibn Ali ibn Abdallah or Muhammad al-Imâm was the son of Ali ibn Abd Allah ibn al-Abbas and great-grandson of al-‘Abbas ibn ‘Abd al-Muttalib, the uncle of the Islamic prophet, Muhammad. He was born in Humaima in Palestine, and was the progenitor of the Abbasid dynasty.
Document 3: Abdur-Razzaq Nurul-Ain: Syed Abdur-Razzaq Nurul-Ain is the successor of the Sufi saint Syed Ashraf Jahangir Semnani. From amongst the descendants of Syed Abdul Razzaq Jilani, the line of saints of Ashrafia Jilania is one of the most reputed households belonging to the Indo-Pak subcontinent. Within this line, Syed Abdul Razzaq, popularly known as Nur-ul-Ain, was the heir, disciple and Khalifa of Syed Ashraf Jehangir Semani. Syed Abdul Razzaq was the son of his maternal cousin. Syed Abdul Razzaq is the 11th descendant of the greatest Sufi Syed Abdul Qadir Jilani of Jilan, Iraq. Abdur-Razzaq Nurul-Ain first met Ashraf Jahangir Semnani at the age of twelve years in Baghdad when Ashraf Jahangir Semnani made a visit there and from there on never parted from his company. He adopted Syed Abdul Razzaq as his son and made him the heir and caretaker. Originated from the name of Syed Ashraf, this line of saints is still called as Ashrafia. Syed Ashraf Jehangir Semani died in 808 AH and Syed Abdul Razzaq became the heir to his throne. After strenuous spiritual training he was bestowed with Khilafat (Spiritual Successor) and from him the Ashrafi spiritual chain flourished. According to the tradition of Mirat-ul-Asrar, at the time of his death, Syed Ashraf Jehangir Semani was either 106 or 110 years of age. In Tohfta ul Abrar, his age is written as 120 and year of birth is 688 AH. Even his adopted son, Syed Abdul Razzaq was 120 of age at the time of his death. He spent 12 years before he took Bayat and 68 years in travel and in the service of Syed Ashraf Jehangir Semani and the remaining 40 years after the death of his Murshid at the throne of Khilafat. In accordance to this, his birth year becomes 728, year of arrival in India 740 and year of death 848. His grave is located next to that of Ashraf Jahangir Semnani in the same Shrine in Kichauccha Sharif, Dist. Ambedkar Nagar, Uttar Pradesh, India.
Document 4: Muhammad Atta-ullah Faizani: Muhammad Atta-ullah Faizani was an Afghan Islamic scholar. He was born 17 April 1923 (the twenty-first day of Ramadan of that year) in Herat, Afghanistan to a family of "miagan" (religious scholars descended from a great Islamic saint). The honorific "Faizani", a derivation of an Arabic word which denotes something that overflows with God's light (blessings), was bestowed upon him by the imam of the Kaaba during his Hajj.
Document 5: Sayyid: Sayyid (also spelled Syed, Saiyed, Seyd, Sayed, Sayyad, Sayyed, Saiyid, Seyed, Said and Seyyed) (] , Arabic: سيد‎ ‎ ; meaning "Mister") (plural "Sadah" Arabic: سادة‎ ‎ , "Sāda(h)" , also spelled "Sadat") is an honorific title denoting people (Sayyid for males, Sayyida for females) accepted as descendants of the Islamic prophet Muhammad through his grandsons, Hasan ibn Ali and Husayn ibn Ali combined Hasnain, sons of Muhammad's daughter Fatimah and his son-in-law Ali (Ali ibn Abi Talib).
Document 6: Imam Ali Mosque: The Imām 'Alī Holy Shrine (Arabic: حرم الإمام علي‎ ‎ ), also known as Masjid Ali or the Mosque of 'Alī, located in Najaf, Iraq, is the Holy site for Shia Muslims. 'Alī ibn Abī Tālib, the cousin of Muhammad, the first Imam (according to Shia belief) and fourth caliph (according to Sunni belief) is buried here. According to Shi'a belief, buried next to Ali within this mosque are the remains of Adam and Noah. Each year millions of pilgrims visit the Shrine and pay tribute to Imam Ali.
Document 7: Ishaq al-Turk: Ishaq al-Turk (also: Eshaq El-Tork, Arabic إسحاق الترك). Abbasid propagandist for Abu Muslim sent to the Turks of Transoxania, hence the name "al-Turk" (of the Turks). After Abu Muslim's murder at the orders of al-Mansur, he fled to Transoxania, and declared a revolt on al-Mansur. He claimed that Abu Muslim was a prophet who was sent to reform Zoroastrianism, thus starting one of many movements claiming prophethood or divinity for Abu Muslim. He also claimed descent from Yahya ibn Zayd ibn Ali ibn Abi Talib, but is most likely an ethnic Persian. The Abbasid ruler of Khorasan had him captured and executed. His group continued to be known as al-Muslimiyya "(followers of Abu Muslim Khorasani)," and constitute the fundamental ideology of the sect well known as Bābak’iyyāh in the future.
Document 8: Kubrawiya: The Kubrawiyya order (Arabic: سلسلة کبرویة‎ ‎ ) is one of the Sufi orders and way that trace its direct spiritual lineage and chain (silsilah) to the Islamic prophet Muhammad, through Ali, Muhammad's cousin, son-in-law and the First Imam, via Imam Ali raza. In contrast, most other Sufi paths trace their lineage through Ali.The Kubrawiya order is a Sufi order ("tariqa") named after its 13th-century founder Najmuddin Kubra.The Kubrawiya Sufi order was founded in the 13th century by Sheikh Nadjm ed-Din Kubra in Bukhara in modern Uzbekistan. The Mongols had captured Bukhara in 1221, they committed genocide and killed nearly the whole population. Sheikh Nadjm ed-Din Kubra was among those killed by the Mongols.
Document 9: Shia view of Ali: Ali was the cousin and son-in-law of the Islamic prophet Muhammad, and a member of the "Ahl al-Bayt". Shias regard Ali as the first Imam and is considered, along with his descendants, to be one of the divinely appointed successors of Muhammad who are claimed by the Shia the only legitimate religious and political leaders of the Muslim community. Although Ali was regarded, during the lifetime of Muhammad, as his initial successor, it would be 25 years before he was recognized with the title of Caliph "(successor)". Like the rest of his household, Shias claim that Ali is infallible and sinless and is one of The Fourteen Infallibles of the household of Muhammed.
Document 10: Syed Ali (name): Syed Ali (Arabic and Urdu: سيدعلی) is a family of Syeds in South Asia, notably India and Pakistan. Syed is usually used in front of the given name as a title, and Ali is used as a surname in honour of their ancestor, Ali ibn Abi Talib, the first cousin and son-in-law of Muhammad. In these countries, the title "Syed", an honorific that denotes descent from Muhammad, is the most common English spelling of the Arabic term Sayyid(سيد).
Document 11: Ali: Ali ( ; Arabic: علي‎ , "ʿAlī " ‎ , ] ; 13 Rajab, 21 BH – 21 Ramadan, 40 AH (c. 594 – 29 January 661) was the cousin and son-in-law of Muhammad, the prophet of Islam. He ruled as the fourth caliph from 656 to 661, and was first Imam of Shia Islam from 632 to 661.
Document 12: Ussaki: Ushshaki (Turkish: "Uşşaki "Ush-shaki"" ), is a branch of the Khalwatiyya order of Islamic mysticism, also known as "Tasawwuf", founded by Sayyid Hasan Husameddin. Literal translation of his name, Husameddin means the sharp sword of the religion. He was born in 880 A.H. ( 1473 CE) in Bukhara, Uzbekistan. Being the son of a merchant named Hajji Tebaruk, his family lineage extends to Imam Hassan, Caliph Ali, and eventually to the Prophet Muhammed.
Document 13: Ali ibn Kama: Ali ibn Kama, the uncle of the Buyid ruler Rukn al-Dawla and the latter's other brothers Mu'izz al-Dawla and Imad al-Dawla, was a Buyid military officer who became prominent among the Buyids of Jibal, and was greatly honored among his Daylamite kinsmen. At the death of Imad al-Dawla in 949, Ali was appointed as the viceroy of Ray by Rukn al-Dawla, who went to Shiraz to secure the succession of his son there, Adud al-Dawla. Meanwhile, the Samanids used this opportunity to invade the territories of Rukn al-Dawla, forcing Ali to flee from Jibal. In ca. 959, a battle ensured between Ali and the Ziyarid prince Bisutun, which resulted in a Buyid victory. In 966, Ali and Rukn al-Dawla defeated a large force of "ghazis" who had arrived from Khorasan. Rukn al-Dawla later died in 976 and was succeeded by his son Fakhr al-Dawla, who had Ali executed.
Document 14: Shua Ullah Behai: Shua'u’llah Behai (1878 - July 3,1950), also known in the Baha’i tradition as Mirza Shua'u’llah, was the son of Mírzá Muhammad `Alí, son of Baha’u'llah.. Shua'u’llah Behai was the eldest grandson of Bahá'u'lláh, the founder-prophet of the Bahá'í Faith, and the eldest son of Mírzá Muhammad `Alí, whom Bahá'u'lláh named Ghusn-i-Akbar, meaning "Greater Branch." Shua'u’llah Behai was fluent in English and is the only known descendant of the Baha’i prophet to have become an American citizen. Shua'u’llah Behai was born in Qasr al-Mazra'a, ("Palace of Mazra'a”) Acre District, Palestine, and grew to maturity under the shadow of the Great Baha’u’llah.
Document 15: Sultan Ali: 'Ali ibn Muhammad ibn 'Ali ibn al-Husayn was the son of the fifth imam of Twelver Shii Muslims and fourth imam of Ismaili Shii Muslims, Muhammad al-Baqir. Born in Medina, 'Ali, known in Iran as "Sultan 'Ali," was dispatched by his father to the areas of Kashan and Qom, where he served as a Friday prayer leader and teacher; his popularity and his preaching of Shii Islam proved threatening to the local representative of the Umayyad dynasty. The Umayyad representative's forces cornered and killed Sultan 'Ali and a band of his supporters, after a prolonged battle, and before a larger group of supporters could arrive, in Ardahal, a village roughly 45 kilometers east of Kashan on August 7, 734 CE (27 Jamadi II, 116 AH). He is still revered by Shii Muslims, especially in Iran, where his burial place—which has undergone repeated renovations but dates, in part, to the Saljuq period—has become a site of visitation. The shrine is known for a distinctive annual carpet-washing ritual ("qālī-shūyān") that occurs on the seventeenth day of autumn to commemorate the day of Sultan 'Ali's martyrdom, a ritual that might have its origins in Sultan 'Ali's body having been wrapped in a carpet and brought to the site of his burial after his murder.
ground_truth: Tasawwuf