The issue of “Quran-Sufficiency” is of important Quran-related issues, Quranism or “Ahle Zikr” Movement explaining this issue argued with verses and terms which the most important one is the verse: (We have sent down to you the Book which is the explanation of all things), the Quran contains explanation of anything which needs to be explained, namely the Quran is the explanation of everything. To receive religious teachings, they only rely on the Quran and ignore the role of other religious sources, in particular Sunnah, and by presenting some verses of the Quran, they have tried to prove that the Prophet’s (PBUH) Hadiths are not of the divine oracles and the teachings of Sharia are only obtained from the Qur'an, the Qur'an is the only source of Islamic law and can be understood without the help of Hadiths. In this article, causes and ideas of "Quranism" will be reviewed and discussed with a descriptive - analytical method and based on decisive evidence of the Holy Quran, we prove that the Prophet's (PBUH) Hadiths are the divine oracles too, and the Quran and Sunnah are the two main sources of understanding the Islamic Sharia law.

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