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Abstract

Praise be to God and prayer and peace be upon the Messenger of Allah and his family and companions. The science of the ills of the Hadith is accurate and difficult to achieve, except from the collection, research and careful consideration of the novels and their methods, and this has received unrivaled attention among the first imams and those who followed the approach of God-given to serve the Prophet's Sunnah, may Allah have mercy on them. In this research, the classification methods of the books of the ills and the methodology of the scientists were compiled, mentioning the most important works for each method. In conclusion, I ask God Almighty sincerity and acceptance. May Allaah bless our Prophet Muhammad and his family and companions, and praise be to Allah.

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