and the Successors and others like them, as Imam Ahmad, may Allah have mercy on him, did in his well-known book on asceticism. He organized it by individual names and recounted the asceticism of the prophets, the Companions, and the Successors, although other writers on asceticism, such as ʿAbd Allāh ibn al-Mubārak and Hannād ibn al-Sarī