Sirāj ud-DīnMuhammad ibn Muhammad ibn 'Abd ur-Rashīd Sajāwandī (Persian: محمد ابن محمد ابن عبدالرشید سجاوندی) also known as Abū Tāhir Muhammad al-Sajāwandī al-Hanafī (Arabic: ابی طاهر محمد السجاوندي الحنفي) and the honorific Sirāj ud-Dīn (سراج الدین, "lamp of the faith") (died c. 1203 CE or 600 AH)[1] was a 12th-century Hanafi scholar of Islamic inheritance jurisprudence, mathematics[2] astrology and geography.[3] He is primarily known for his work Kitāb al-Farāʼiḍ al-Sirājīyah (Arabic:کتاب الفرائض السراجیه), commonly known simply as "the Sirājīyah", which is a principal work on Hanafi inheritance law.[2][4] The work was translated into English by Sir William Jones in 1792 for subsequent use in the courts of British India.[5][4][6] He was the grand-nephew of qariMuhammad ibn Tayfour Sajawandi. He lies buried in the Ziārat-e Hazrat-o 'Āshiqān wa Ārifān in Sajawand.[7]
Name
His full name is Sirāj ud-Dīn Abū Tāhir Muḥammad Ibn Muhammad ibn 'Abd ur-Rashīd ibn Tayfoūr Sajāwandī (Persian: سراج الدین محمد سجاوندی).[1] His nasab, Ibn Muhammad ibn 'Abd ur-Rashīd ibn Tayfoūr refers to him being the "son of Muhammad son of 'Abd ur-Rashīd son of Tayfour". Sajāwandī is his nisbah meaning "from Sajawand". He is also known by the teknonymAbū Tāhir meaning "father of Tahir".
Works
Kitāb al-Farāʼiẓ al-Sirājīyah (The Sirajite Book of Inhertiance laws, کتاب الفرائض السراجیه) a.k.a. al-Sirājīyah ("The Sirajite")
al-Tajnīs Fī al-Hasāb (The Analogy for the Calculations , کتاب التجنیس فی الحساب)
Resālat Fī al-Jabr wa al-Muqābilah (Treatise on Algebra , رسالة فی الجبر و المقابله)