Question:

A man did not lower his gaze from prohibited sights on one of the days of Ramadan, then slept and had a wet dream. Is such ejaculation considered a deliberate act that breaks his fasting?

Fatwa:

All perfect praise be to Allah, the Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His Slave and Messenger.

The fasting of the man who had a wet dream in the month of Ramadan is valid. He did not ejaculate deliberately after looking at prohibited things as long as ejaculation occurred during sleep. However, a Muslim must lower his gaze from any prohibited sight in compliance with the verse (that means): {Tell the believing men to reduce [some] of their vision and guard their private parts. That is purer for them. Indeed, Allah is Acquainted with what they do.} [Quran 24:30] Thus, it is obligatory to lower one’s gaze from prohibitions, and this obligation becomes more confirmed during the month of Ramadan.
Allah Knows best.