If a person consumes something that breaks the fast due to ignorance of the ruling or of the time

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Ruling on using smokeless tobacco; does it break the fast?
He had intercourse with his wife when the muezzin was giving the call to Fajr prayer

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If he hears the adhaan for Fajr whilst he is having intercourse with his wife
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Ruling on using smokeless tobacco; does it break the fast?
He had intercourse with his wife when the muezzin was giving the call to Fajr prayer

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