Q: What is the rule if one breaks a qaḍā’ Ramadan fast during the day?
A: If there is enough time before Ramadan to fast later, he may break his fast before ‘noon’ adhān. To do so in the afternoon is impermissible. Otherwise, he should observe kaffārah, i.e. to give food to ten poor persons. If he cannot afford it, he should fast for three days.