An-Nawawi's "Forty Hadith" is a famous collection of hadiths (the sayings of the Prophet Muhammad, peace be upon him) collected by a 7th century Islamic scholar named Imam Yahia bin Sharaful-Deen An-Nawawi

An-Nawawi's "Forty Hadith Qudsi" is a famous collection of hadiths (the sayings of the Prophet Muhammad, peace be upon him) collected by a 7th century Islamic scholar named Imam Yahia bin Sharaful-Deen An-Nawawi