English summary: When engaging in the study of the Mamluk period (1250-1517), one will certainly find that neither the theoretical foundations nor the de facto implementation of the law system have been researched extensively. In this book, parts of the -Qawa'id al-fiqh- (-Fundamentals of Jurisprudence-) by Muhammad b. Bahadur az-Zarkasi (died 1392) will be made accessible. The reader is also provided with information on the jurisprudential and the social backround of the text. Under specific headings, az-Zarkasi subsumed case studies and abstract rules which were suitable to further explain...