Is it permissible to adopt the view that allows for a single expiation (kaffarah) for multiple broken oaths, and is there sin in delaying the expiation despite repentance, and is it permissible to fast as expiation for someone who possesses the means to feed the poor?

If a person takes multiple oaths concerning a single matter and then breaks them, he is required to offer expiation for each oath he broke, according to the majority of scholars. The expiation becomes immediately due upon breaking the oath, especially if the breaking of the oath involves an act of disobedience.