«قال الله تعالى: الصيام جنة يستجن بها العبد من النار وهو لي وأنا أجزي به»
The Prophet (peace and blessings be upon him) said:
"Allah Almighty says: Fasting is a shield by which the servant protects himself from the Fire. It is for Me, and I Myself will reward it."
Hadith Referenceصحیح الجامع الصغیر / حرف القاف / 4308