Does the fast of a man who thought, then slept, then had a wet dream during the day in Ramadan become invalid, and is a make-up fast obligatory upon him?

If one thinks or has a wet dream and ejaculates, their fast is not broken, but ghusl is required. This is based on the Prophet's (peace be upon him) saying to Umm Sulaym: "Yes, if she sees the water," and men are subject to the same ruling, based on his (peace be upon him) saying: "Water necessitates water." Their fast is valid because wet dreams are not by choice, and thoughts are among what Allah has forgiven, based on the Prophet's (peace be upon him) saying: "Indeed, Allah has forgiven my Ummah for mistakes and what they whisper to themselves, as long as they do not speak or act upon it."