Sahih Muslim is a collection of hadith compiled by Imam Muslim ibn al-Hajjaqj al-Naysaburi (rahimahullah). His collection is considered to be one of the most authentic collections of the Sunnah of the Prophet (may peace be upon him).Sunni Muslims consider it the second most authentic hadith collection,after Sahih Bukhari. However, it is important to realize that Imam Muslim never claimed to collect all authentic traditions as his goal was to collect only traditions that all Muslims should agree on about accuracy. The Muslim Scholars have agreed that all of the Ahadith in Sahih Muslim are authentic.
