"Whatever is not forbidden is permitted."

The Sabbat protects itself from its members' wrongdoing through the use of a special tribunal. The tribunal is made up of at least four prelates, selected from among the members of the Inner Circle and the Arch-Bishops, with at least one of those members being of Cardinal rank or higher.

The accused is brought before the tribunal and the accuser or another prelate presents the case against him. The accused is then allowed to state his case. The tribunal meets in private thereafter and makes its decision. If the Sabbat is found guilty, she is punished severely. If she is found innocent, the accuser often receives the punishment the Sabbat on trial would have. Sabbat punishment is swift and harsh. The nature and degree of the punishment is based upon the actual crime. The Code of Milan is used as the basis for Sabbat law.

A tribunal will only be called upon in extreme circumstances, such as treason and situations that cannot be worked out by one leader alone. The decision of the tribunal will be final and all involved will agree before the onset of the trial to abide by that decision.

Members of the Sabbat are generally free to do as they please, as long as their actions have no adverse effect upon the sect as a whole, but as it can be clearly seen, the Sabbat is not at all lenient to those who act in a disloyal fashion.

Above section authored by Patrick Halverson.

Treason against the sect--Torture and dismemberment, in whatever poetic fashion the "judge" decides (including being thrown off buildings, being drawn and quartered, having limbs removed, etc.)

Murdering a fellow Sabbat--Diablerie at the hands f the murdered vampire's pack (or a pack of an elder's choice, should the victim be an elder)

Deceiving Sabbat leaders--Burning or flaying.

Revealing a Sabbat secret to one outside the sect--death by fire or a Wild Hunt (differs from a Blood Hunt in that not only is the offending vampire killed but also any who may have had knowledge of the information-Kindred or Kine)

Failure to respond to a leader's call--Branding or mutilation (often, the vampire loses a hand)

Striking a vampire of greater station--Blinding, mutilation (often the vampire suffers broken bones)

Association with Camarilla vampires--First offense:censure; second:flogging; third:staking or death

Failure to accomplish an important mission assigned by leaders--Spite punishment, generally of a humiliating nature (such as cutting off vampire's nose, branding his forehead with an "F", dashing out his teeth, etc)

Displays of cowardice--Blood Feast for fellow Pack members, though the vampire is usually left undead to atone for himself later

(From Guide to the Sabbat pg 45-46)