Wasa'il al-Shia is a highly esteemed and comprehensive compilation of Shia jurisprudential hadiths, addressing all aspects of Islamic religious law in great detail. This encyclopedic collection draws extensively from earlier authoritative Shia sources, including the Kutub al-Arba‘a (The Four Books) and other credible primary hadith collections. Comprising approximately 36,000 hadiths spread across 30 volumes, it was meticulously compiled by Shaykh al-Hurr al-Amili (d. 1693).
Book: Wasail al Shia
