Rethinking the criteria for recognizing instructional grandchildrenAnd its effects on Islamic jurisprudence and society

 Guidance prohibition and its related issues have been proposed by scholars of the principles of jurisprudence, and they have discussed the signs and examples of this issue. The present article, which has been written in an analytical-descriptive method, has organized its discussions based on two hypotheses by stating the nature of the instructional ban;First, the criteria for recognizing the instructional prohibition are different from other prohibitions, and secondly, the instructional prohibition has effects such as proving the Shari'a ruling, corruption of action, and discovery of the status quo. The result of this research is that the criterion of guidance is to observe the expedient duty and prevent him from being in the worldly corruptor and practical harms that are forbidden from it, and for this reason, committing it has no afterlife. In addition, the effect of prohibitive guidance, whether it is guidance in detail, conditionality or obstruction, and whether it belongs to worship or transactions, is corruption.Keywords: Prohibition, Guidance, Expediency, Corruption, Imami Jurisprudence