Title: al-Nuṣūṣ al-tārīkhīyah fī Musnad al-imām Aḥmad ibn Ḥanbal ʻan fatrat al-Khulafāʼ al-rāshidīn
Subjects: Caliphate, Criticism and interpretation
People: Aḥmad ibn Muḥammad Ibn Ḥanbal (780-855)