Kitab Shahih Bukhari dan Kitab Shahih Muslim adalah kitab hadits paling shahih bila dibandingkan dengan kitab-kitab hadits lain, dua kitab shahih ini dikenal juga dengan sebutan As-Shahihain (kalau diartikan ke bahasa indonesia kira-kira artinya "dua kitab shahih'), akan tetapi tidak semua hadits shahih terdapat dalam kitab As-Shahihain tersebut. kita bisa mencari hadits-hadits shahih yang tidak terdapat dalam As-Shahihain dalam kitab ulama hadits yang lain seperti Shahih Ibnu Khuzaimah, Shahih Ibnu Hibban, Kitab-kitab sunan yang empat, Mustadrak Al-Hakim, Sunan Al-Baihaqi, Sunan Ad-Daruquthni, dan lainnya.
Sahih Bukhari and Sahih Muslim Book is the most saheeh hadeeth book compared to other books of hadith, Sahih these two books also known as As-Shahihain (if interpreted to Indonesian roughly means "two books of Saheeh '), will but not all authentic hadith found in the book As-Shahihain. we can find hadeeth saheeh which is not contained in the book As-Shahihain another hadith scholars such as Ibn Khuzaimah Saheeh, Saheeh Ibn Hibban, books of Sunan were four, Mustadrak Al-Hakim, Sunan Al-Bayhaqi, Sunan Ad-Daruquthni, and others.