Red Sulphur, by ‘Abd Allah Ibn Abi Bakr al-‘Aydarus, is a short treatise on spiritual wayfaring (suluk). It is not an academic work that targets the learned as its audience, nor is it an advanced treatise for the benefit of great saints like its author.

It is written for the benefit of those who have just begun treading the spiritual path. Despite its brevity, though, it is extremely beneficial, replete as it is with insightful comments for all spiritual seekers.