Yoma

Yoma (Aramaic: יומא, lit. "The Day") is the fifth tractate of Seder Moed ('Order of Festivals') of the Mishnah and of the Talmud. It is concerned mainly with the laws of the Jewish holiday Yom Kippur, on which Jews atone for their sins from the previous year. It consists of eight chapters and has a Gemara ('Completion') from both the Jerusalem Talmud and the Babylonian Talmud.