Rewards of Fasting
It is narrated by Abu Huraira (may Allah Almighty be pleased with him) that the blessed messenger of Allah Almighty said,
'Indeed your Lord (Almighty) says, 'The reward of every good action is between 10 times its amount to 700 times its amount, (however), the fast is (solely) for me, and I alone will reward it, and the fast is a shield from the fire of hell. The odour from the mouth of the fasting man is more fragrant to Allah Almighty than musk. If an ignorant man speaks foul to any one from amongst you who is fasting then say, 'I am fasting'". (Hadith Sahih Bukhari)