Narrated Abu Hurairah [رضي الله عنه]: Allāh's Messenger said:  ❝Whoever observes Saum [fasts] during the month of Ramadān out of sincere faith, and hoping to attain Allāh's Rewards, then all his past sins will be forgiven.❞ [Sahīh Bukhari, (1/38) | Translated By Dr. Muhammad Muhsin Khan]