Ma'aserot

Ma'aserot (, lit. "Tithes") is the seventh tractate of Seder Zeraim ("Order of Seeds") of the Mishnah and of the Talmud. It discusses the types of produce liable for tithing as well as the circumstances and timing under which produce becomes obligated for tithing. In Biblical times, during each of the six years of the cycle, "Maaser Rishon" was given to Levites as 10% of an individual's crop. "Maaser Sheni" was separated in the first, second, fourth and fifth year and is 10% of the crop remaining after Maaser Rishon. It was brought to Jerusalem to eat or was redeemed upon coins which were deconsecrated upon food in Jerusalem. The final category is "Maaser Ani" that is given to the poor in the third and sixth years.
Ma'aser Sheni is the main topic, along with the laws of Reva'i, of the next tractate "Ma'aser Sheni". Maaser Ani is discussed in Tractate Pe'ah. The seventh year of the cycle is designated "Shemitta", and there were no tithes given at all in the land of Israel.