Musnad Ahmad 30:3015

Yahya ibn Sa'id narrated to us, from Muhammad ibn 'Amr, Abu Salamah narrated to me, from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "For the fasting person there are two joys: a joy when he breaks his fast, and a joy when he meets his Lord. And the change in the breath of the mouth of the fasting person is more pleasant to Allah than the scent of musk."