Inferring the rules of understanding hadith from Salim's narration

After Quran, the narrations are the main source of the Islamic Sciences. In order to establish sciences based on the narrations, any researcher must first learn the rules of understanding hadith and apply them in the process of understanding hadith. The rules of understanding hadith should be derived from the sources approved by the infallibles (a.s), such as Quran, hadith and reason, although hadith is the most effective of these sources, but for this reason less attention has been paid to it. In this research, by analyzing the authentic narration of Salim, some rules of understanding the hadith have been deduced and explained, some of which are: the necessity of examining and identifying the abrogator and rejecting the abrogated narration by the abrogator, identifying the inclusive narrations and generalizing their ruling, finding the specific and specifying the general with it, , understanding of similar hadiths by Quranic and narration certainty. Therefore, in order to understand the hadith correctly, after making sure that the narration is narrated from the infallible, the mentioned rules must be applied in the process of understanding the hadith.