An Introduction to the Knowledge of Exceptional Verses

It is predicated to Medina verses in the Mecca surahs and Mecca verses in the Medina surahs so-called, "exceptional verses". Initially, studying exceptional verses was considered in Mecca and Medina traditions and occasionally in the order of descent of traditions, then,at the beginning of surahs in the commentary books, abrogating or abrogated and the number of verses, after that, in an independent aspect in Quranic science's books which included a chapter in these books on Mecca and Medina discussion, and in recent centuries in Quranic history's books and eventually it allocated monographs toitself in the modern age. However, exceptional verses in general or in detail are not consensus and there are different beliefs about the. possibility of existence of above-mentioned verses