The principles of Hadīth criticism developed through

The principles of Hadīth criticism developed through "isnād and matn". Isnād refers to the chain of narrators that provide the origin of the Hadīth while matn refers to the content or text of the Hadīth. Therefore, the evaluation of the authenticity and reliability of the Hadīth depended on the examination of the credibility of the narrators in the chain (isnād) as well as the consistency and coherence of the text (matn). This methodology helped to prevent the spread of fabricated and inaccurate Hadīths and ensured the preservation of the authentic teachings of Islam.