[5] Al-Tamimi's most-prized medical work is The Guidebook to Basics in Food Nutrition and the Properties of non-compounded Medicines (Arabic: كتاب المرشد الى جواهر الأغذيه وقوت المفردات من الأدويه), known also under its abbreviated name, Al-Murshid,[6][7] of which only portions have survived.
Maimonides (1138–1204), the Jewish rabbi and physician, also made use of his works, and is quoted as saying of him: "This man who was in Jerusalem, and whose name was al-Tamimi, composed a book, calling it 'al-Murshid,' that is to say, 'Guide' ['that which leads aright'].
[10] Other sections of al-Tamimi's original work were copied by `Ali ibn `Abd al-`Aẓim al-Anṣāri in 1270, now preserved at the U.S. National Library of Medicine in Bethesda, Maryland.
"[12] Al-Tamimi's works on materia medica are an invaluable source for understanding the curative remedies that were in use in Syria and Palestine during the early Muslim period (until 1099).
They often relate to the daily life and beliefs of the local residents, as well as the practical usages of plants, particularly in the region of greater Jerusalem and the Dead Sea basin.