“O you who believe! Fasting is prescribed for you as it was prescribed for those before you, that you may become Al-Muttaqun (the pious).” [Soorah al-Baqarah (2):183]

Narrated Abu Huraira: The Prophet said, “Whoever fasted the month of Ramadan out of sincere Faith (i.e. belief) and hoping for a reward from Allah, then all his past sins will be forgiven, and whoever stood for the prayers in the night of Qadr out of sincere Faith and hoping for a reward from Allah, then all his previous sins will be forgiven .”