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.
- World Religions in Practice: A Comparative Introduction, Paul Gwynne - 2011