Tevul Yom

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Tevul Yom is a tractate in the Mishnah and Tosefta; in most editions of the Mishnah it is tenth in the order Tohorot.

According to Leviticus 15:5 et seq., one who takes the prescribed ritual immersion still remains impure until sunset. The degree of impurity in such a case is slight, and according to rabbinical interpretation neither the "ḥallah" nor sanctified flesh is rendered unclean by being touched by such a person, even before sunset; it is merely rendered unfit (pasul). Profane or unsanctified things may be touched by him without consequence. This tractate precisely defines the degree of impurity attaching to such a person, and stipulates also how far the purity of anything is affected by his touch.