Aḥmad ibn Jaʻfar Jaḥẓah al-Barmakī

Abu'l-Ḥasan Aḥmad ibn Jaʿfar al-Barmakī al-Nadīm, surnamed Jaḥẓa and al-Ṭunbūrī, was a descendant of the Barmakid family, and a well-known scholar, singer, poet, and courtier of his time.