The Bada (appear after stealth) and the definite signs of appearance

One of the most important teachings of Mahdaviat is the signs of appearance, which are divided into two categories: Definite and indefinite. And the remarkable debate is whether Definite signs will necessarily occur based on definite promises as well as their temporal and spatial descriptions? Or it may not have happened and so-called bada(Emergence after stealth)  will occur in them? How can the existence of some opposing narrations(Hadithes), such as the narration(Hadith) of Qasim al-Jaafari, be analyzed? The purpose of this research is to prove that despite the opinion of some thinkers and experts who, according to Jafari's narration, bada is permissible in Definite signs, according to authentic verses and narrations, bada in these signs is not possible. And the opposing narrations either have the problem of authenticity or signification or are in opposition to the verses and narrations that are valid and should be left out. Of course, in terms of the time and place of occurrence of these symptoms in such a way that their symptoms are not a problem, bada may. The data collection in this article is library and the research is done in a descriptive-analytical manner on two issues: A: The study of bada in the definite signs of appearance. B: The study of bada at the time or place of these signs, the result is that bada is not possible in the definite signs and is possible in the temporal or spatial descriptions under certain conditions.