Sa’īd ibn Hibat Allāh, Abū al-Ḥasan was a Nestorian
Christian court physician to the ’Abbāsid caliphs al-Muqtadī
(ruled 467-487 AH/1075-1094 CE) and al-Mustaẓhir (ruled 487-512
AH/1094-1118 CE) and physician at the ’Aḍudī hospital in
Baghdad. This treatise on the generation and development of human
beings from conception to death is in fifty chapters.
The colophon states that the copy was made in Baghdad in 562
AH/1166-7 CE by by Tūmā ibn Manṣūr ibn Hibat Allāh, for his
own use. It is possible that the scribe was a nephew of the author.