Muḥammad ibn Umayl al-Tamīmī (Arabic: محمد بن أميل التميمي), known in Latin as Senior Zadith, was an early Muslim alchemist who lived from c. 900 to c. 960 AD.
Very little is known about his life.[2] A Vatican Library catalogue lists one manuscript with the nisba al-Andalusī,[3] suggesting a connection to Islamic Spain, but his writings suggest he mostly lived and worked in Egypt. He also visited North Africa and Iraq.[4][5] He seems to have led an introverted life style, which he recommended to others in his writings.[6][7] Statements in his writings, comparing the Alchemical oven with Egyptian temples suggest that he might have lived for some time in Akhmim, the former centre of Alchemy. He also quoted alchemists that had lived in Egypt: Zosimos of Panopolis and Dhul-Nun al-Misri.[7]: XIV
In later European literature, ibn Umayl became known by a number of names: his title Sheikh become 'senior' by translation into Latin, the honorific al-sadik rendered phonetically as 'Zadith'[8] and 'ibn Umail' becoming by erroneous translation 'filius Hamuel', 'ben Hamuel' or 'Hamuelis'.
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