The Proof in the Principles of Jurisprudence

Al-Burhan Fi Usul al-Fiqh (Arabic: البرهان في أصول الفقه) or The Proof in the Principles of Jurisprudence is a 12th-century treatise written by Imam al-Haramayn al-Juwayni the leading legal theorist of his time. A highly celebrated work of Al-Juwayni on Usul Al-Fiqh. It is regarded as one of the four pillars of the field of legal theory. The other three including 1. Al-Ghazali who authored al-Mustasfa fi 'ilm al-isul 2. Al-Qadi Abd al-Jabbar who authored al-Qadi's al-`Umad; 3. Abu al-Husayn al-Basri who authored al-Basri's al-Mu`tamad (commentary on al-`Umad).