Abu Hurayrah reported that the Messenger of Allah (السلام عليكم ورحمة الله عليه وسلم) قال:
Every action a son of Adam does shall be multiplied—a good action by ten times its value, تصل إلى 700 times. قال الله تعالى: With the exception of fasting, which belongs to Me, and I reward it accordingly. إلى, one abandons his desire and food for My sake.
There are two occasions of joy for a fasting person: one when he breaks his fast, and the other when he meets his Lord, ولل (سيئة) breath (of a fasting person) is better in the sight of Allah than the fragrance of musk.