An audio series in which Dr. Saleh As-Saleh explains some of Forty Nawawi Hadiths. These hadiths are concerned with various Islamic rules such as: Sincerity, patience, certainty, trust in Allah, steadfastness in abiding by Islam’s aspects, morals, manners, ... etc. This book is approximately well-known in all Islamic countries, which is an evidence of Imam An-Nawawi’s sincerity.