A hadith (, pronounced: "") is the narration of an event from the life of Muhammad, the prophet of Islam. In English, the word hadith is also used as the plural word for a group of these narrations although the plural in Arabic is "a-HAA-deeth". The hadith is used along with the Quran to interpret Sharia. Sunnis follow the kutub al-Sittah while Shias follow the Kutub al-Arba'a.