Abū l-ʿAbbās Aḥmad b. Idrīs (1760-1837) was an influential Moroccan mystic and scholar, to whom more than fifty works are attributed. His students have established several Ṣūfī orders. 1. Biography Aḥmad b. Idrīs was born in Maysūr, near Fez, in Morocco, in 1173/1760. He studied at the university of al-Qarawiyyīn, in Fez, and later taught there, as may be inferred from a remark he made later in life. Although he does not mention his theology teachers by name, they are known to us from other sources,