If one of the mu'adhhdhins calls the Maghrib prayer early and the fasting person breaks his fast, what is required of him?

Question : My last question, my sister says: Honorable Shaykh, in Ramadan an incident occurred where they were waiting to break their fast, and one of the mu'adhhdhins called the adhan early. The mother says that she took a piece of sugar and then abstained until the time of sunset arrived. Does she owe anything, even though she says she made up this day?

Answer : If she knew that the mu'adhdhin had called early, that the mu'adhdhin called while they were watching the sun above the rooftops, that it was still present, because the criterion is the setting of the sun, not the adhan. But if she did not know, and it was the custom of the mu'adhdhin not to call the adhan unless the sun had set, and she broke her fast thinking that the mu'adhdhin was correct, and then it became clear that the mu'adhdhin had called early, then there is no sin on her and no making up the fast required of her.

The presenter : Praise be to Allah, thank you to the sister who asked. This is what happens sometimes: one hears the adhan on the radio and thinks it is the adhan of his town, so he breaks his fast based on that, and then it turns out that the adhan was not the adhan of the town. In that case, he owes nothing, no making up the fast and no sin. But when he knows, he must abstain until the bite in his mouth or the date; he must spit it out.