Ma'as. Sh.
Ma'aser Sheni (Hebrew: מעשר שני, lit. "Second Tithe") is the eighth tractate of Seder Zeraim ("Order of Seeds") of the Mishnah and of the Talmud. It concerns the second tithe obligation as well as the laws of Revai.
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Wikipedia
Ma'aser Sheni (Hebrew: מעשר שני, lit. "Second Tithe") is the eighth tractate of Seder Zeraim ("Order of Seeds") of the Mishnah and of the Talmud. It concerns the second tithe obligation as well as the laws of Revai.