On the authority of Abu Hurayrah (may Allah be pleased with him) from the Prophet (PBUH), who said: "Allah (mighty and sublime Is He) says:

{Fasting is Mine and it is I who gives reward for it. [A man] gives up his sexual passion, his food and his drink for my sake.}"

Fasting is like a shield, and he who fasts has two joys: a joy when he breaks his fast and a joy when he meets his Lord.

The change in the breath of the mouth of him who fasts is better in Allah's estimation than the smell of musk.

Related by al-Bukhaari (also by Muslim, Maalik, at-Tirmizhi, an-Nasaa'i and Ibn Maajah).