Kil'ayim (or Klayim) (Hebrew: כלאים‎, lit. "mixture," or "diverse kinds") are the prohibitions in Jewish law which proscribe the planting of certain mixtures of seeds, grafting, the mixing of plants in vineyards, the crossbreeding of animals, the formation of a team in which different kinds of animals work together, and the mixing of wool with linen in garments. The prohibitions are derived from the Torah in Leviticus 19:9 and Deuteronomy 22:9–11, and the Mishnah in tractate Kilayim, which has a Gemara in the Jerusalem Talmud, further elaborates on the applicable circumstances.