Does breaking the fast occur if someone engages in masturbation before the call to Fajr prayer in Ramadan, given that there is a difference in the timing of the call between different muezzins, especially since one of them calls the prayer four minutes earlier than the others? What is the ruling in this situation?

"Masturbation is forbidden in Ramadan (definition) and at other times, and it is even more severely forbidden in Ramadan because it is a form of obscenity (rafath) which is prohibited. It invalidates the fast if it occurs after the break of dawn and results in ejaculation. If it occurs before dawn, the fast is valid, but with sin, and repentance is obligatory. If it occurs after the adhan (definition) (call to prayer) with certainty that dawn has not broken, or if the mu'adhdhin (caller to prayer) is giving the adhan before the correct time, then the fast is valid. Otherwise, making up the fast is obligatory, because the principle is that the mu'adhdhins are trustworthy regarding the timing. It is obligatory to stay away from this bad habit due to its harms.

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