What is the religious ruling regarding the emission of semen after watching television during the daytime in Ramadan, given that the one who did so did not intend it beforehand?

It is forbidden to watch obscene films in Ramadan and outside of it. However, watching them in Ramadan is more strictly forbidden, especially if it leads to arousal and invalidates the fast through masturbation or similar acts. This is due to the violation of the sanctity of the month and its contradiction to the purpose of fasting, which is the piety of Allah. Whoever commits such an act must perform sincere repentance by abandoning the sin, regretting it, and resolving not to return to it. They must also make up for the fast that was invalidated by masturbation, and there is no expiation (kaffarah) required of them.