The collection of Forty Hadith by al-Imam alNawawi (or Imam Nawawi) has been known, accepted and appreciated by Muslim scholars for the last seven centuries. Its significance lay in the fact that these selected forty hadiths comprise the main essential and fundamental concepts of Islam which, in turn, construct the minimum level of required revealed knowledge for every single Muslim.Since having good knowledge of the various fundamental aspects of the religion is key to a Muslim's practice and application of Islam, this publication provides simple and practical commentaries to the collection of Imam Nawawi's Forty Hadith. Various principles are contained in these hadiths, such as belief, Muslim ethics and fiqh. As such, it is important to have a good understanding of these hadiths based on scholarly interpretations.