It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The breath of the fasting person is more pleasant to Allah than the fragrance of musk. Allah Almighty says: Fasting is especially for Me, and I Myself will give its reward. My servant leaves his desires and food and drink for My pleasure.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9138
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد قوي،خ: 7492، م: 1151