What is the ruling on one who unintentionally had anal intercourse with his wife during the daytime in Ramadan and ejaculated?

"Coming to one's wife in her anus is among the gravest of sins. The Prophet, peace and blessings be upon him, cursed the one who does it and equated him with one who goes to a soothsayer or a menstruating woman.

This act contradicts the natural human disposition (fitra) and causes Allah’s wrath and diseases.

Scholars have reached a consensus on its prohibition, based on the Book of Allah and the Sunnah of His Prophet. The verse (2:223) states: "Your wives are a place of cultivation for you, so come to your place of cultivation however you wish," indicating that the place of cultivation is the vagina, not the anus.

If this act occurs during the daytime in Ramadan, it invalidates the fast, and both the husband and wife are subject to making up the fast and performing the severe expiation (kaffarah mughalladhah), whether ejaculation occurred or not, as long as the wife was compliant."