Reference: Sahih Bukhari (English),Volume 01,02. Belief,Hadith 037:- Narrated Abu Huraira: Allah's Apostle said, "Whoever observes fasts during the month of Ramadan out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven." - #Hamras -

Reference: Sahih Bukhari (English),Volume 01,02. Belief,Hadith 037:- Narrated Abu Huraira: Allah's Apostle said, "Whoever observes fasts during the month of Ramadan out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven."