Religious observance in all areas of life was an issue of major importance to the Qumran community. Several collections of laws or halakhot from Qumran bear witness to the parallel development of these laws with those that emerged within Rabbinic Judaism. This volume includes editions ofseveral such compositions of which Tohorot is the largest. They provide major insight into the development of early halakha. This collection of halakhic compositions should be studied in conjunction with the Temple Scroll, 4QMiqsat Maase ha-Torah, the Damascus Document, Serekh ha-Yahad, and sundrysimilar compositions.