 "Thirteen centuries of Islamic—more particularly Shiah—tradition" called for jurists to base decisions on their legal training as it applied to the situation being judged.There was also no appeal in traditional Islamic law.One jurists's 'discovery' of the ruling of law for a specific case would not have been invalidated by some other jurist's discovery of a different ruling for that case; only God could choose between them, and until the Resurrection (or in the case of the Shiah, the return of the Twelfth Imam) God had left the matter to the jurists, and the first actual judgment was final, as otherwise there would have been an infinite regress of opinions without any final judgment.