Islam and "kufr" (Unbelief) in Fiqh (Islamic Jurisprudence)

The term 'Islam and "Kufr" (disbelief)' is very important in many fields of Islamic culture from theology to interpretation, ethics, mysticism and jurisprudence. This term has a significant difference in the meaning and criterion in these fields. In Fiqh (Islamic jurisprudence), Islam and Kufr are tied to accepting the monotheism and the mission of the Prophet of Islam or the recite of the creed. Islamic rules such as purification, marriage license, inheritance, and the like, all of which are for "Muslims," are only denied to those who refute one or both of the principles of the reciting creed. Denial of necessary, and so on, is not an independent reason for renunciation of Islam by a Muslim, unless he/she clearly reveals the denial of the reciting creed, then it will cause apostasy. "Seerah of Ahlul Bayt", whether during the era of "BASTE-YAD" (the de facto guardianship of Imam (a.s) or his deputy) or otherwise, confirms that he/she was considered as Muslim by reciting the creed. Although this declaration was accompanied by an esoteric denial or doubt. Semantic differentiation of rules of Islam and Kufr in various fields, especially Islamic jurisprudence with other areas is very important and necessary. This paper seeks to examine the issue with this perspective.