Critique and Study of the Reasons for the Widely Known Viewpoint on the Ritual Impurity of the Unbeliever's Underage Children

One of the issues that has been more or less discussed among jurists and has followed by some discourses has been the innate impurity of the unbelievers’ underage children.
The Sunni jurists believe in the cleanliness (ṭahārat) of human beings despite their type of tendencies and beliefs, which naturally includes the unbelievers’ children, too. In contrast, however, most of the Shī‘as believe that the unbelievers’ underage children follow their fathers and, like them, are considered as impure. In support to their viewpoints, these jurists have provided reasons that are all of them, as well as their evidences, critically reviewed and their feeble arguments are shown from different aspects and finally the theory of physical purity of the unbelievers’ children, whether in the field of the people of Scripture or the polytheists, is approved and some evidences have also been provided in this respect.