Although little is known about his early life, he was one of the leading figures in Syria in the 7th century. He taught at the Theological School of Nisibis. In 612, he left the post because of a doctrinal dispute with the Syriac Church of the East. He was a member of the Syriac Orthodox Church. He was a resident of the monastery of Qenneshre, which was situated near the banks of the Euphrates. His student Jacob of Edessa (d. 708), the major representative of “Christian Hellenism".
He was perhaps the first Syrian to mention the Indian number system.
- "The Syriac Biographical Dictionary". syriaca.org.
- "roger-pearse.com". Archived from the original on 2016-08-04. Retrieved 2012-05-02.
- Gutas, Dimitri (1998-07-23). Greek Thought, Arab Culture: The Graeco-Arabic Translation Movement in Baghdad and Early 'Abbasid Society (2nd-4th/8th-10th centuries). Taylor & Francis. ISBN 9780415061339. Retrieved 14 September 2012. CS1 maint: discouraged parameter (link)
- Grigory Kessel et al., “Treatise on the Astrolabe - prooemion and scholion (based on Ammonius?)” in Syriac Scientific and Philosophical Literature last modified November 9, 2017, http://syriaca.org/work/9747.