Kutub al-Sittah are the main hadith collections in Sunni Islam meaning "the six books". They are sometimes called the "Sahih Sittah". They consist of Sahi al-Bukhari, Sahi Muslim, Sunan as-Sughra, Sunan Abu Dawood, Jami al-Tirmidhi and Sunan ibn Majah. Huraira is the most quoted person in these books.