The one who fasts has two moments of joy, a joy when he breaks his fast and a joy when he meets his Lord. And the smell of the fasting person's mouth is more pleasing to Allah than the fragrance of musk.
وبإسناده قال للصائم فرحتان فرحة حين يفطر وفرحة حين يلقى ربه ولخلوف فم الصائم أطيب عند الله من ريح المسك