Musannaf Ibn Abi Shaybah 12992 — One who breaks his fast on a day

Ya'la bin Hakim said: I asked Sa'id bin Jubayr: If a person deliberately breaks a fast of Ramadan, what is his expiation? He said: I do not know what his expiation is; it is a sin he has committed. He should seek forgiveness and make up one day in its place.