Ruling on swearing by the life of the Qur’aan.
Taking Serious Oaths While Being Affected by Insinuating Whispers.
Ruling on one who swears about something based on what he thinks is likely to be the case, then it turns out to be otherwise.
A vow to do something that Allah has made obligatory and enjoined upon people is not valid.
A Catholic woman promised Allah that she would not get married if Allah forgave her sins, then she became Muslim.