A person had sexual relation with his wife in the month of Ramadan
(while he was fasting), and he came to Allah's Messenger (ﷺ) seeking his
verdict concerning that action. The Prophet (ﷺ) said (to him), "Can you
afford to manumit a slave?" The man said, "No." The Prophet (ﷺ) said, "Can
you fast for two successive months?" He said, "No." The Prophet (ﷺ) said,
"Then feed sixty poor persons."
Sahih al-Bukhari Book 86, Hadith 49