Sahih's an Islamic term that means authentic. It's commonly used to describe the authenticity of a Hadith. Definition Sunni Muslims use the term the "Two Sahihs" referring to Sahih Bukhari and Sahih Muslim, since they consider them to contain only Sahih Hadith. Similarly, the "Six Sahihs" refers to the "two Sahihs" and in addition the four other famous collections, being Abu Dawud, al-Tirmidhi, Ibn Majah and al-Nasa'i. Altogether, there're forty-nine books of authenticated hadith-collections, w… (More on Sahih)