Tahdhib al-Ahkam (Arabic: تَهْذِيب ٱلَأَحْكَام فِي شَرْح ٱلْمُقْنِعَة, romanized: Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿa, lit. 'Rectification of the Statutes in Explaining the Disguised') is the third hadith collection of the Four Books of Shia Islam. It was compiled by TwelverShia Hadith scholar al-Tusi. This work is included among the four books of Shia Islam. It is a commentary on the al-Muqni'a by Al-Shaykh Al-Mufid, who was a Twelver Shia theologian.[1][2]