"Hassan ibn Zahed Gharib Kermani was a Persian Muslim alchemist, lived in first half of the 8th century. In the period of Abu-Sa`id Bahadur of Mongol Ilkhanate dynasty in Iran, Ibn Zahed travelled in 723 A.H. to India, where he was supported by Sultan Mohammad ibn Tughluq, the second king of the Tughlaq dynasty of India, and then his alchemical books were dedicated to the king. His first book, Miftah al-romuz is an authentic book that deals with the fundamentals of Alchemy, covering 6 chapters and 31 parts. Two other Farsi books are left by him and unfortunately not well-known: Mighlad al-konuz which explains alchemical processes, tools and equipments used in alchemy and Muntakhab (a selection) of Miftah al-romuz which is an independent treatise, however, more or less, is similar to Miftah al-romuz."
