The Sunnah is related to the Quran.
=== In the Quran ===The word "sunna" appears several times in the Quran, but there is no specific mention of sunnah of the messenger or prophet (sunnat al-rasool, sunnat al-nabi or sunna al-nabawiyyah), i
=== Sciences of sunnah ===According to scholar Gibril Fouad Haddad, the "sciences of the Sunnah" ('ulm as-Sunna) refer to:the biography of the Prophet (as-sra), the chronicle of his battles (al-maghz), his everyday sayings and acts or "ways" (sunan), his personal and moral qualities (ash-sham'il), and the host of the ancillary hadth sciences such as the circumstances of occurrence (asbb al-wurd), knowledge of the abrogating and abrogated hadth, difficult words (gharb al-hadth), narrator criticism (al-jarh wat-ta`dl), narrator biographies (al-rijl), etc

