Musnad Ahmad 30:3500

Rawh narrated to us, Hammad ibn Salamah narrated to us, from Thabit, from Abu Rafi’, from Abu Hurairah, from the Prophet, peace and blessings of Allah be upon him, who said: "For the fasting person, there are two joys: a joy at the time of his breaking his fast, and a joy when he meets his Lord, the Almighty and Majestic."