What is the ruling on someone who had sexual intercourse with his wife during the daytime in Ramadan, then divorced her afterwards for another reason; does he owe expiation?

The discussion has already covered the expiation for intercourse during a Ramadan day. The fact that a man divorced his wife after having intercourse with her during a Ramadan day does not waive the expiation for him, because the sanctity of the month was violated by intercourse therein, and the expiation was legislated due to the violation of this sanctity.