كتاب الورع (Kitab al-Wara')

Attributed to Imam Ahmad ibn Hanbal, this classical text embodies the ethical and spiritual dimension of early Sunni piety. It gathers profound statements on war (scrupulousness) and moral restraint, reflecting the austere asceticism and sincerity.

Author: Ahmad ibn Hanbal
Publisher: King Faisal Center for Research and Islamic Studies