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Purity Laws is a category for books that examine the rules, rituals, and social norms defining purity and impurity across religions and cultures, from antiquity to the present. It includes scriptural sources and legal codes, translations and commentaries, practical guides, and historical, anthropological, and ethical analyses. Topics span diet and food laws (e.g., kosher/halal), bodily states and sexuality, birth and death, ablutions and ritual spaces, dress and taboos, quarantine and hygiene, and the drawing of community boundaries (including debates around caste, gender, and power). Works in this category explore how purity norms shape identity and daily life, how they evolve and are contested, and how they intersect with law, health, morality, and contemporary reform movements.

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