Sahih Bukhari
Sahih Bukhari Volume 008, Book 075, Hadith Number 414.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 75. Invocations
Narated By Abu Huraira : Allah's Apostle said, "Whoever says, 'Subhan Allah wa bihamdihi,' one hundred times a day, will be forgiven all his sins even if they were as much as the foam of the sea.