What is the most important deed in accordance with the traditions of the Prophet Muhammad (saw)?
      Narrated Abu Huraira:                          Allah's Apostle was asked, "What is the best deed?" He replied, "To      believe in Allah and His Apostle (Muhammad). The questioner then      asked, "What is the next (in goodness)? He replied, "To participate in     Jihad (religious fighting) in Allah's Cause." The questioner again      asked, "What is the next (in goodness)?" He replied, "To perform Hajj      (Pilgrim age to Mecca) 'Mubrur, (which is accepted by Allah and is      performed with the intention of seeking Allah's pleasure only and not      to show off and without committing a sin and in accordance with the      traditions of the Prophet)."