Abu Mansur Muwaffaq of Herat flourished in the 10th century, he was an influential Pharmacist and Alchemist. Abu Mansur Muwaffaq wrote "The foundations of the true properties of Remedies", where he described 585 drugs. Due to water shortages in nearby regions he studied the properties of water and also described the distillation of sea-water for drinking. He traveled to Khwarezm and the Caspian and Aral Sea regions. He strongly influenced and inspired the teachers and works of Abu Rayhan Biruni especially in his chapters on pharmacology and Alchemy. The manuscript is of special value because it is the oldest preserved manuscript in Persian language. Nothing is known about the origin of the manuscript. It was kept in the Imperial library of Vienna before 1820 already.
We have 1 facsimile edition of the manuscript "Abu Mansur Muwaffak ibn Ali al-Harawi: The Foundations of the true properties of remedies": Abu Mansur Muwaffak ibn Ali al-Harawi: Das Buch der Grundlagen über die wahre Beschaffenheit der Heilmittel facsimile edition, published by Akademische Druck- u. Verlagsanstalt (ADEVA), 1972