At the Moslem conquest of Syria, Palmyra capitulated to Khalid (see Caliphate) without embracing Islam (Baladsori [[[Baladhuri]]], seq.; Yagut, i.
Its concluding words suggest that its production was due to Khalid ben Yezid (died in 708), who was a pupil of the Syrian monk Marianus, and according to the Kitab-al-Fihrist was the first Mussulman writer on alchemy.
The Liber de compositione alchemiae, which professes to be by Morienus - perhaps the same as the Marianus who was the teacher of Khalid - was translated by Robertus Castrensis, who states that he finished the work in 1182, and speaks as if he were making a revelation - " Quid sit alchemia nondum cognovit vestra Latinitas."
The successful reduction of the rebels in Arabia enabled him in his first year to send his great general Khalid with his Arab warriors first against Persians, then against Romans.
Here he waited two months for reinforcements, and with his Bedouin contingent, strengthened by the adhesion of the Ateba and Bani Khalid tribes, advanced on Shakra in Wushm, which fell in January 1818 after a regular siege.
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