This study aims to examine the quality of the chain of narrators (isnad) in Sahih Muslim by conducting an isnad critique on the hadith about the ten natural dispositions (fitrah) of human beings. The research method used in this paper is library research, which involves utilizing books as sources for data collection, as well as applying the method of takhrij al-hadith to trace the hadith. The findings and discussion in this study reveal that one narrator in Muslim’s transmission chain was identified as having memory issues. However, the narrator's weak memory does not affect their integrity in transmitting the hadith. Based on the research conducted, the author concludes that the isnad of the hadith narrated by Muslim regarding the ten natural dispositions of human beings is classified as ḥasan li gairihi (good due to corroborating evidence). This study recommends that academics further develop isnad critique research on narrations in Sahih Muslim.