Some of them are saying that Sahih Al-Buhari and Sahih Muslim are the only sahih hadih books. Than what about the books like Thirmidhi and Abu-Dawud etc.
Kutub al-Sittah or sometimes referred to as Al-Sihah al-Sittah are the six books of Hadith which are considered to be an authentic authority and contains Sahih Hadith of Prophet Muhammad (PBUH). The list of books with their authors is as follow.
- Sahih Bukhari, collected by Imam Bukhari (d. 256 AH, 870 CE), includes 7,275 ahadith
- Sahih Muslim, collected by Muslim b. al-Hajjaj (d. 261 AH, 875 CE), includes 9,200 ahadith
- Sunan Abu Dawood, collected by Abu Dawood (d. 275 AH, 888 CE), includes 4,800 ahadith
- Jami al-Tirmidhi, collected by al-Tirmidhi (d. 279 AH, 892 CE), includes 3,956 ahadith
- Sunan ibn Majah, collected by Ibn Majah (d. 273 AH, 887 CE), over 4,000 ahadith
- Sunan al-Sughra, collected by al-Nasa'i (d. 303 AH, 915 CE), includes 5,270 ahadith
- Muwatta Malik, collected by Imam Malik (d. 179 AH, 795 CE), 1,720 ahadith