Media the world after its firmness of the copyist and its abrogation

Knowledge of the science of the transcriber and the abrogated is a great matter, and the scholars have agreed that no one may explain or fatwy in something from the Book of God or the Sunnah of His Messenger until there are many conditions, including the knowledge of the transcriber and the abrogated. That is why the scholars have taken care of this science a lot, as it is a very important science...