She vowed to fast for a month, should she make up the days when she was menstruating?

Is it permissible to change a vowed action to something better?

For kafaarat yameen it is not sufficient to feed one poor person ten times

He said, “May the curse of Allaah be upon me if I smoke another cigarette” then he smoked again

He promised Allaah that he would give up the secret habit then he did it again. What does he have to do?

The number of expiations depends on the number of oaths

He vowed to fast every Monday and Thursday but he did not fast for several years

What is Kaffarat al-Yamin?

She made several vows but then forgot them

He made a vow if a certain thing happened and it did not happen; and the punishment for not fulfilling a vow