Superiority of fasting

Narrated by Abu Huraira (R.A)
The Prophet (pbuh) said, "Allah said: ' every good deed performed by son of Adam is a credit for him but fasting is the exclusively mine and I give reward for it. Fasting is a shield against sins. Therefore, when any of you is fasting he should neither indulge in obscene language nor raise the voice.
The smell coming out of the mouth of a person that is casting is more pleasant to Allah than the smell of musk.And he who fasts has two occasions of joy when he breaks the fast, and the second is when he meets his lord"

(Bukhaari & Muslim)