Arabic lectures by Sayyid Kamal al-Haydari (Qum) on the Rasail of Shaykh Murtada al-Ansari (d. 1281 AH / 1864 CE). Sh. Murtada al-Ansari was one of the greatest Shi'ah scholars to have lived. A descendant of the Prophet's Companion Jabir b. 'Abd Allah al-Ansari, Shaykh Murtada al-Ansari is simply known as "al-Shaykh" or "al-Shaykh al-A'dham" amongst scholars and hawza students. His works al-Makasib (in Fiqh) and al-Rasail (in Usul) are classics that all Shi'ah jurists must study before graduating. You can read more about him here.