Kitaab al-Umm ( كتاب الأم) is a book of law that is used as an authoritative guide by the Shafi'iyyah. The work was composed by the founder of the Shafi'i school, Imaam ash-Shafi‘i (767-820 CE). The term "al-Umm" means "the exemplar." Kitab al-Umm is noted for its hermeneutic approach to developing legal principles, basing them on revelation rather than traditional authority. Printed in 11 volumes by Dar Al-Wafaa' and Dar Ibn Hazm on yellow paper. The checking was done by Doctor Rif’at Fawzi 'Abdul Mutalib.