He wrote al-Mu'tamad fi Usul al-Fiqh (The Canon of the Foundations of Jurisprudence), a major source of influence in informing the foundations of Islamic jurisprudence until Fakhr al-Din al-Razi's al-Mahsul fi 'Ilm al-Usul (The Compilation of the Fundamentals of the Legal Sciences).
He wrote "al-Mu'tamad fi Usul al-Fiqh," a foundational text in Islamic jurisprudence, which had a major influence on legal thought until Fakhr al-Din al-Razi's "al-Mahsul fi 'Ilm al-Usul."