Ibn al-Jazzār's "Zād al-musāfir wa-qūt al-ḥāḍir" provisions for the traveller and nourishment for the sedentary : Books I and II: "Diseases of the head and the face" - Ibn-al-Ǧazzār, Aḥmad Ibn-Ibrāhīm 932-1009 (Brill, 2022)