If a person fasts in expiation for breaking an oath, does he have to feed poor people if he becomes able to afford it after that?

He said to his wife: I swear a threefold oath (of divorce) that you will go to school

He swore that he would stop watching movies, then he watched a movie by mistake. Does he have to offer expiation, and how can he stop watching movies?

He swore a false oath so that his friend would take his charity and not reject it

Fasting is not sufficient when one is able to feed poor persons for kafaarat al-yameen

If a person swears oaths concerning two matters and breaks his oaths, he has to offer two expiations

She said to her husband: The limit of Allah is between me and you

He set aside money for the purpose of Hijrah (migration to a Muslim country) then swore to give it in charity if he fell into sin

Obligation of fulfilling promises and vows

He broke oaths and does not remember how many they were; what should he do?