Title: Muqaddimat al-arbaʻīn al-thulāthīyah min marwīyāt al-Shaykh ʻAbd Allāh ibn ʻAbd al-ʻAzīz ibn ʻAqīl
Subjects: Hadith, Authorities, Criticism, interpretation
People: Aḥmad ibn Muḥammad Ibn Ḥanbal (780-855)