al-Kasani

Abu Bakr ibn Masud al-Kasani (d. 587 AH / 1191 CE) was a major Hanafi jurist from Kasan (in present-day Uzbekistan) and the author of Badai as-Sanai fi Tartib ash-Sharai (The Splendors of Arrangement in Organizing Legal Matters), one of the most systematically organized works of Hanafi jurisprudence. His birth date is not precisely known, but he lived in the sixth century AH. He studied under the leading Hanafi scholar Ala ad-Din as-Samarqandi, whose daughter Fatimah he married; she was herself a renowned jurist, and it is said that father and daughter would sometimes jointly issue fatwas.

Badai as-Sanai is structured as a commentary on his teacher as-Samarqandi's Tuhfat al-Fuqaha, but it far surpasses the original in scope and depth. What distinguishes al-Kasani's work is its exceptional organizational clarity: for each legal topic, he presents the ruling, its conditions, its pillars, its causes, and its evidences in a systematic format that makes the Hanafi legal reasoning transparent and accessible. This methodical approach made it one of the most valued references in the Hanafi school.

Al-Kasani traveled to Damascus and Aleppo, where he taught and served as a legal authority. He was known for his deep legal acumen and his ability to derive rulings from first principles. He died in Aleppo in 587 AH (1191 CE). His Badai as-Sanai continues to be one of the most important and frequently cited references in Hanafi jurisprudence.