The ruling on one who swears not to do something and then does it

Question:
From the Yemeni Republic, this is a message from one of the female listeners there. She says: Your sister in Allah, the listener (J. A.), our sister has a collection of questions, among which is a question that says: If a person swears not to do a deed in the present, but does it in the future, is the expiation obligatory upon him?

Answer:
This depends on his intention. If he says, "By Allah, I will not speak to so-and-so," and his intention is for that specific day, and then he speaks to him afterwards, he owes nothing for the future; because he only intended the present day. Likewise, if he says, "By Allah, I will not buy such-and-such a commodity," and his intention is for that day, he owes nothing if he buys it afterwards.
As for if he says, "By Allah, I will not speak to him," and his intention is forever, or if he says, "By Allah, I will not buy this commodity," and his intention is forever, then whenever he speaks to him or buys it, the expiation becomes obligatory upon him, and so it is with what is similar to that. Yes.

The presenter: May Allah reward you with good.