Tractate Horayot

The Masechet Horayot is the eighth and final gemara tractate of the Seder Nezikin.
The Gemara Horayot is the study of the laws relating to the inadvertent teaching ordered by a court (i.e. they erred in the law and the reverse order of the knowledge of the Torah), as well as the laws of a high priest or a king who sinned by mistake.
The Horayot tractate is a gemara which contains 3 chapters. It is the shortest gemara tractate in the Babylonian Talmud at only 14 pages.