What is incumbent upon one who broke their fast during the day in Ramadan, assuming that a wet dream necessitates breaking the fast, based on the hadith "Whoever awakes in a state of major ritual impurity has broken their fast"?

The Hadith "Whoever wakes up in a state of janabah (major ritual impurity), there is no fasting for him" is abrogated. In the early days of Islam, sexual intercourse was forbidden for a fasting person at night after sleeping. When it was permitted until Fajr, it became permissible for one in a state of janabah to fast before performing ghusl. Abu Hurayrah, may Allah be pleased with him, initially issued a fatwa based on this Hadith, then retracted it when he learned of its abrogation from the Hadith narrated by Aisha and Umm Salamah.

Whoever wakes up in a state of janabah and then intentionally breaks their fast, thinking that their fast is invalid, has erred and must repent and make up that day. Expiation (kaffarah) is not obligatory upon them because their interpretation was a plausible one. However, if they broke their fast by engaging in sexual intercourse, then the expiation for intercourse becomes obligatory, which is freeing a slave, or fasting for two consecutive months, or feeding sixty poor people.